We only need to do this on one of the nodes. This Pi model has the following specifications: 1.5GHz quad-core ARM Cortex-A72 CPU; VideoCore VI graphics; 4kp60 HEVC decode; True Gigabit Ethernet; 2 USB 3.0; 2 USB 2.0 ports; 2 micro-HDMI ports (1 4kp60 or 2 4kp30) USB-C for input power, supporting 5V 3A operation; 8Gb LPDDR4 memory On this page, you can access the official SourceForge directory for the open source software, which contains the corresponding image file for the Raspberry Pi models 2 and 3. . I'm pretty sure what I bought will power multiple Pi's without issue. All these models include one (dual) or two (Quad) USB 3.0 ports connected to the Pi's USB ports via a JMicron JMS561 (PDF) USB-to-SATA bridge. 1 x Micro USB To 4 Port OTG Hub. Features, Small Scale Cluster Simulator, USB Gadget Mode: Ethernet and Serial Console. Extension board to add 100Mbps ethernet and two usb port hub to Raspberry PI Zero. . Connector for Controller Serial Console (FTDI Basic). USB gadget mode: ethernet and serial console. The Zero Stem is compatible with the Raspberry Pi Zero v1.3 and the Raspberry Pi Zero W v1.1. You don't need to connect anything else. Step 8: Adding the Power & Ethernet Cables. 4inch HDMI Capacitive Touch IPS LCD Display (C), 720720, Optical Bonding Screen . They all support up to 400 MB/s throughput, although this . Access to all Zero 2 W Ports. (High-Performance Cluster) with Raspberry Pi Computers March 16, 2022; How I Got My Old Pi 3 to Boot from USB March 16, 2022; How I cracked my own WiFi with a Raspberry Pi . Total cost unassembled is around $100, half of which is SD cards. Recommended power supply for Raspberry Pi. USB to UART: for controlling the Raspberry Pi via serial terminal. I don't know of any hub that could supply 8 Amps (1 amp per port). Cluster HAT v2.5 for Raspberry Pi. Network Cables. USB extension cable. Onboard 4 port USB 2.0 hub. I used a Satechi USB-C power tester and measured an 8% peak power savings using UASP. Compatible with many devices with OTG. The system architecture diagram above is way too complex because there are essentially just four hubs. ago, Another way to look at it: 3.5A per Pi4, You want SIX? This has a maximum of 2.5 amps on any one USB port which is more than plenty for any one Pi. It is configured to use USB Gadget mode. And a license for using multiple devices with VirtualHere costs $29.00. . Plug USB cables to USB hub Plug USB hub to network switch DC power using the cable provided with the switch Fit the 3-pin fan plug into the GPIO pins of one of the Pi's, so that . The Cluster HAT (Hardware Attached on Top) interfaces a (Controller) Raspberry Pi A+/B+/2/3/4 with (up to) 4 Raspberry Pi Zeros (1.1/1.2 or W) configured to use USB Gadget mode is an ideal tool for teaching or testing small scale clusters. PiZero Cluster board has 32 micro USB ports for power and data, two for each Raspberry Pi Zero board, 16 USB type A ports, and 16 Ethernet interfaces. Raspberry Pi power individually controllable using clusterctrl command. Heatsinks for the Raspberry Pi, TRENDnet 8-port Unmanaged Switch, 1-foot cat6 Ethernet Cable, Anker USB Power Hub, USB Power Cables, USB-A for 3B+ (microUSB) USB-C for 4B, 120mm Fan, ARCTIC P12 1050RPM (3-pin) Noctua NF-P12 1300RPM (4-pin) 3- and 4-pin Fan-to-USB adapter, Buck Converter, Knurled Threaded Inserts, M5x10x7 (mid-section) USB Hub, When looking at the USB ports used for the Pi Zeros in "lsusb -t" you will see they're not connected USB Port 1->P1, they are connected as follows. That means you'd get 8% more runtime on a battery if you do a lot of file transfers. 3/4 pin to USB converter. USB Gadget Mode: Ethernet and Serial Console. Just wait a minute or two until the green light next to power starts blinking periodically. The network hub is connected to my router, so I can connect to them from my laptop, and more importantly, they are connected to the Internet so they can download . Building a Raspberry Pi 3 cluster for under 100 (250 including five RPi3s). Cluster Triple Features USB Gadget Mode: Ethernet and Serial Console. The system controls the board via "Controller Pi" GPIO and communicates via a micro-USB port to one of the RPi host board's USB ports using an onboard 4-port USB 2.0 hub. USB Hub. . Raspberry Pi Zeros powered via Controller Pi GPIO (USB optional). . Raspberry Pi B+ / 2B / 3B / 3B+ /4B: connected via Micro USB cable. This is a tiny image and fast way to update firmware and enable boot from USB. 1 - 7 layer Raspberry Pi Clear Case Enclosure - I only used 6 of these, which is cool. Arduino Compatible Base Board For Raspberry Pi Compute Module 4, HDMI, USB, M.2 Slot . I put a raspberry4 on the USB3-port (18W aka >3A) and put three more Pis on the USB2-ports (12W aka 2,4A) - the pi4 lasted for about 30mins, then the voltage dropped and I got this: Under-voltage has occurred since last reboot. In the image below you see the Raspberry Pi model B that I have used for . In either case, there are separate models for the Raspberry Pi 4B and a model for the Rock Pi 4 that also supports the Raspberry Pi 3B or 3B+. Onboard 4 port USB 2.0 hub. The Anker PowerPort 10 is designed as a high speed charger and is able to deliver 12 amps of power across its 10 USB ports. The PoE Injector is also connected to a power supply and injects 48V to the network cable. 8-Layers Cluster Case Designed for Raspberry Pi / Jetson Nano. $19.00. For one Raspberry Pi 4 you need around 15W (5V x 3A). USB to M.2 SATA converter for Raspberry Pi and development boards includes USB cable and mounting accessories for Raspberry Pi board Supports M.2 SATA drives (including 2230, 2242, 2260 and 2280 drive heights) and supports USB 2.0 with data transfer speeds up to 480Mbps OS independent for easy set-up with no device driver installation required More information can be found in dedicated part of the guide to my chassis here Cluster chassis Regarding the USB disks - The bigger ones (64 GB) are to be used as persistent storage for pods. It offers ground-breaking increases in processor speed, multimedia performance, memory, and connectivity compared to the prior-generation Raspberry Pi 3 Model B+, while retaining backwards compatibility and similar power consumption. Once the shim is installed, your Raspberry Pi can be plugged directly into a computer or USB hub without any additional cables or power supplies. Now that Docker is installed we need to create our swarm. Networked using USB Gadget Mode: Ethernet and Serial Console. Draws power only from OTG port, current for USB devices is limited to host capability. In the background, you can see the 5-port hub and the Anker Power Brick. to connect USB devices such as WiFi dongles, USB hubs . A 4-port USB 2.0 mini USB hub perfect for adding full-size USB ports to your Raspberry Pi Zero. To connect to the PI pogo pins are used piggypacking on Raspberry PI Zero's test points from the bottom of the board. So the order of operations will be: 1. create swarm on a single node (this node will be a manager node), 2. join one more node as a manager, and 3. join two more nodes as workers. They can be used with a range of Raspberry Pi products A+/3A+/Pi Zeros and Compute Modules. Macally, [22] Hi-Speed 7-Port USB 2.0 Powered Micro HUB, AC Powered. Onboard 4 port USB 2.0 hub. Tends to draw power from the Pi. As reported on NotebookCheck, the Cluster HAT v2.3 can cluster up to four Raspberry Pi Zero 1.2 or 1.2 boards, as well as Zero W SBCs, on a Raspberry Pi A+/B+/2/3 board. Next hit Ctrl-Shift-X, or click on the Cog Wheel which appeared after you selected your OS, to open the "Advanced" menu. At the end of this tutorial, you will have a production-grade K8s cluster, easy to scale, running on top of MicroK8s. Able to power the Raspberry Pi, keyboard, mouse and LogiLink UA0144 USB Ethernet adapter. Onboard 4 port USB 2.0 hub. Enable CGI in apache and restart the web server: root@ups:/etc/nut# a2enmod cgi Your MPM seems to be threaded. Then there is Raspberry Pi NAS SATA Adapter Stackable X828 2.5" SATA HDD/SSD Cluster Shield. The Pi-Tron CM4 advances from a Raspberry Pi Compute Module 3+ to a Raspberry Pi Compute Module 4 (CM4). To enable the antenna connector (and disable the built-in PCB antenna), you need to edit the /boot/config.txt file on your Pi, and add the following line, then reboot the Pi: # Switch to external antenna. Controller Pi can be rebooted without interrupting power to Pi Zeros (network recovers on boot). I deployed a plain Raspbian OS on each three Raspberry Pi 4 devices. You want to find a USB "charging" hub which most are rated for a full 2 amp per port. Like the Pi-Tron CM3+, which launched as an SBC but now offers an enclosure option, the Pi-Tron CM4 will be available as either an SBC or an embedded computer. One custom USB hub. Map-reduce is a general framework for analysis and is not a particular algorithm. I'm using a 6-port 60W USB-hub from Anker to power them. The USB Hub back power problem with 3.0 USB Hubs on the Raspberry Pi 4: There is an issue with many of the cheaper USB Hubs on the market where the USB Hub back powers the Raspberry Pi 4. It can also be used with mobile devices as an OTG USB adapter! It's almost the same physical size as a Raspberry Pi, so it fits perfect at the bottom of your stack. The DeskPi Super6C Raspberry Pi CM4 Cluster Board is a standard mini-ITX motherboard, capable of assembling up to 6 Raspberry CM4 compute modules, where each module has enhanced peripheral equipment for advanced functions, including storage expansion. Compatible with many devices with OTG. The new Raspberry Pi Zero W offers all the benefits of the Pi Zero v1.3, but with one big difference - built-in WiFi! Expands into 4 USB Ports for Raspberry Pi Zero, For Orange Pi, For ODROID, For Banana Pi. Plug USB cables and C7 power plug to USB hub (the power port on the hub is fragile, so support it with one hand while plugging in/out) I still need to order my other 2 and was waiting on a stackable laser cut Pi case from China. Configured to use USB gadget mode, it is an ideal tool for teaching, testing or simulating small scale clusters. Support for PC and Mac users to bring USB peripherals,such as hard drives, printers, mouse, keyboards, and USB hubs. The Cluster Triple is a step up in CPU and RAM from the Cluster HAT by using Raspberry Pi Compute Modules (CM1/CM3/CM3+ NOT CM4). dtparam=ant2 I did some testing with this antenna just to compare the tiny built in triangle antenna on the PCB, and the results surprised me. Edit /etc/nut/hosts.conf to allow CGI scrips access to the monitor. usb_hub.sch, README.md, USB Hub for SMPS powered Raspberry Pi 3 Cluster, The repository contains Schematic and PCB files for SMPS powered USB Power Hub for a Raspberry Pi Cluster. I then installed each Raspberry Pi in the rack chassis and powered them. The Cluster HAT basically comprises of a USB 2.0 hub and independent I 2 C or GPIO controlled power for each Pi Zero (and Alert LED). A 5V micro USB typically powers the Raspberry Pi. Terrible Cluster is a toy computing cluster for experimenting with distributed computing and software deployment tools. Like with Raspbian or other Raspberry Pi versions, you need an external computer to download and install OpenMediaVault. I then added the cables. Individual Raspberry Pi Zero power controlled via Controller Pi GPIO (I 2 C). In action, the CanaKit Raspberry Pi 4 Power Supply with PiSwitch is as reliable as it gets and is designed to maximize the performance of . All of the Pi cluster setups I have seen are using a multi device USB charger. I mounted the USB hub to the back of the cluster and then plugged the Pis into the available ports. Categories iot, raspberrypi, kubernetes, microk8s Difficulty 2 Author Canonical Web Team webteam@canonical.com Overview Duration: 1:00 This tutorial will be a brief walk through the . But for their internal testing, they've decided to create a cluster for 16 Raspberry Pi Zero boards. I haven't actually tested it yet as I haven't put together my Pi cluster. Click the Raspberry icon > Preferences > Raspberry Pi Configuration. Expands into 4 USB Ports for Raspberry Pi Zero, For Orange Pi, For ODROID, For Banana Pi. The keyboard is available in different language/country options as detailed below. This causes the Raspberry Pi to get stuck on reboot. When using PoE Injectors, make sure that they are compliant with the IEEE 802.3af standard. UART "Hub". device. Your option will depend on how many RPIs you want to support on each MEGA4 Hub. Add one line to the bottom of the file: MONITOR servers@localhost "Server UPS". I finally decided on purchasing the Anker PowerPort 10 to run the cluster. One advantage with a powered USB hub is that you can use it to power the RPi4 as well. When done, put the SD card to Rpi4 and turn the power on. It comes with rich PC case front panel headers and offers two power supply options for the users. Draws power only from OTG port, current for USB devices is limited to host capability. 3.5 * 6, 21 Amps, You are looking for a hub with twenty one amps output, 1, Draws power only from OTG port, current for USB devices is limited to host capability. 2 Continue this thread Key Value Summary How to deploy a multi-node Kubernetes cluster on your Raspberry Pi 4, 3 or 2. IWAIVON USB Wall Charger, Anker PowerPort Speed 4 Port, Anker PowerPort 10, RavPower Prime 60W 6 Port, Assuming that every USB port in the hub will be (eventually) connected and having in mind that RaspberryPi4B v1.1 specs states that it requires a 5v/3A power supply which none of these supply, what will be a good USB hub power supply? So for under one hundred dollars you can run a USB-server in your network that also doesn't consume too much power. For running a small number of Raspberry Pis you can eliminate the need to use a USB hub or to use a desk-mounted multi adapter with USB ports. Aluminum enclosure designed for Raspberry Pi Zero 2 W (compatible with other Zero and Zero W Boards) Passive Cooling. GPIO/ADC "Hub". That may not be enough for even one Pi4B, depending on the peripherals connected to it. The Zero Stem is a PCB shim that turns a Raspberry Pi Zero into a USB dongle. Raspberry Pi Zeros powered via Controller Pi GPIO (USB optional). The X828 is a stackable 2.5" SATA HDD cluster expansion board focused on providing a bigger storage solution for your Raspberry Pi B/2B/3B/3B+/4B. Raspberry Pi 4 Model B Overview. Endless disappointment. A USB hub will likely not be enough to power 8 Pi's. The spec is for 500mA per port (USB 2) and 900mA (USB 3). This charger is one of the more powerful ones . The cables are only 25cm long, so they fit neatly into the pi's and hub. Setting "Advanced" options. The only way to get it to successfully start up again is to manually remove the hub from the USB 3.0 port. ARM frequency capped has occurred since last reboot. Add to Cart. The Raspberry Pi 4 comes with a wireless adapter built-in, so you could utilize that as well. Major improvements include the addition of an M.2 B-key slot and USB 2.0 OTG port. Wall plates are directly wired into your mains electric as with a standard electricity socket. Power is provided by the same micro- Once you've found the IP address (using DHCP or Nmap), make note of the IP address and Onboard 4 port USB 2.0 hub. As with all my benchmarks, I ran every benchmark four times, discarding the first result. I would suggest doing a google search for Pi cluster and looking at what they are using. Turning to the power supply, it's fashioned to work perfectly with the Raspberry Pi 4 with 18 Watt 5.1V / 3.5 Amps, has an insulated 1.5 meter USB cable, and a noise filter to up its stability credentials. The last empty port on the hub will get a longer cable to attach to the rest of the network. See here for details; Official Raspberry Pi USB C 15W supply - for 2 RPIs; A good quality 'dumb' 5V 5A (25W) supply with a USB C converter - for 3 RPIs Self-Led Lab Exercises for Raspberry Pi Cluster . And a bunch of sensors for the CM4 temperature monitor and input power monitor plus a Fan controller. Connect a cable from the USB charging hub to the micro-USB port on the Pi. Included, Cluster HAT, HAT standoffs and screws, Raspberry Pi 4 Model B is the latest product in the popular Raspberry Pi range of computers. 3. New ClusterCTRL (I2C) USB interface allows individual control of Pi power, fan, LED, etc. Creating the cluster Raspberry Pi; Raspberry Pi. Gigabit Ethernet Hub. Map-reduce (also "MapReduce", "Map-Reduce", etc.) On the Interfaces tab, set SSH and I2C to Enable, and then click OK. Interface. It has a single-core 1 GHz processor chip, similar to the Pi A+ and B+. That way you don't need to buy a separate power supply for the RPi. USB Multiport Charging hub (we used the Anker Powerport-10) . Onboard 4 port USB 2.0 hub. The official Raspberry Pi mouse is a three-button optical mouse which . This will power on the Pi. USB extended ports: USB1~USB4. Connects seamlessly with the POD HDMI-USB Hub Module and other POD modules. A PoE Injector is a small device with Input and Output RJ45 connectors that is plugged between the switch and the Raspberry Pi. The Cluster HAT add-on board has been designed to attach to the top of a Raspberry Pi A+/B+/2/3 and allows you to easily add up to four Raspberry Pi Zeros configured to use USB Gadget mode. (More testing to come.) Setting up a Headless Raspberry Pi, Configuring Networking, Configuring a User, Setting up a Routed Wireless Access Point, Before you Begin, Install AP and Management Software, Set up the Network Router, Ensure Wireless Operation, Configure the AP Software, Running the new Wireless AP, Setting up a Bridged Wireless Access Point, Before you Begin, Raspberry Pi Zero / Zero W / Zero WH: connected via Micro USB connector. Create the swarm. $65.63 - $66.99. Individual Raspberry Pi Zero power controlled via the Controller Pi GPIO (I2C). The Terrible Cluster backplane board uses USB 2.0 to tie together five Raspberry Pi Zeros in a compact package. ClusterCTRL . ARGON POD CASE. so, my pi4 isn't worth a dime anymore, if crippled The USB cable with switch. The Raspberry Pi 4 was announced two weeks ago as a major new upgrade to the line of cheap single-board hobbyist computers. The . That will mean it's done. 1 x Micro USB To 4 Port OTG Hub. It puts out 2.4a per port AND (wait for it) it includes SIX 1ft Micro USB cables.perfect for running 6 Raspberry Pis with a single power adapter. The hub plugs into the Pi Zero's micro-USB port and provides four USB ports with a max transmission speed of up to 480 MBps. Compatible with many devices with OTG. I first plugged a USB C cable into each Pi and routed these through the holes in the base and to the back of the board. The charger supplies 2.4A max per port, but only 12A total. Replaceable ABS Plastic Cover. They've likely done this board for testing their ActBulb, as Koichi Nakamura, Idein CEO . I also bought bunch of colourful patch CAT6 cables to connect the hub to each Raspberry Pi. The Pi 4 featured a faster CPU, options for up to 4GB of RAM, and a new,. 1 x Micro USB To 4 Port OTG Hub. Apanage Powered USB 3.0 Hub, 11 Ports USB Hub Splitter (7 High Speed Data Transfer Ports + 4 Smart Charging Ports) with Individual On/Off Switches and 48W Power Adapter for Mac Pro/mini, PC, HDD, Disk, 4,878, $3999$49.99, Save 20% with coupon, FREE delivery Wed, Sep 28, More Buying Choices, $34.41 (2 used & new offers) But how much current (in milliamps or amps) the Pi requires to function depends on your usage. First, install the webserver and the NUT web stuff: apt install apache2 nut-cgi. For a headless install, I added an empty text file named ssh on the root of the SD card to ensure I can remote to the machines once they reboot. The Cloudlet case has plenty of room for these extra parts. Lastly, I needed a network switch to connect the Pi devices to, but I had a spare 8-port, so I didn't need to buy another. Waveshare USB 3.2 Gen1 Hub HAT for Raspberry Pi, 16.50, Add to cart, Quick view, (19 Reviews) The Pi Hut Ethernet and USB Hub with Micro-USB OTG Connector, 9.90, Add to cart, Quick view, (92 Reviews) UUGear Zero4U: 4-Port USB Hub For Raspberry Pi Zero, 9.90, Add to cart, Quick view, (12 Reviews) The Pi Hut USB Mini Hub with Power Switch, 4.30, Saves money and makes for less cables and less clutter. The new firmware should be flashed. $37.00. That will support at least four Pi4B, up to six if the peripheral load is low. The Cluster HAT can be used with any mix of Pi Zero 1.2, Pi Zero 1.3 and Pi Zero W. USB Gadget Mode: Ethernet and Serial Console. Building a Raspberry Pi 3 cluster for only 80 (250 including five RPi3s). Also, it is an ideal tool for teaching, testing or simulating small scale clusters. Step 1: download and install OpenMediaVault. It can be used on Raspberry pi, as well as other similar application, like USB lamp, usb fan, Driving Recorder, LED Desk Lamp etc. Click on the "CHOOSE OS" button and select "Raspberry Pi OS (other)" and then "Raspberry Pi OS Lite (32-bit)". Expands into 4 USB Ports for Raspberry Pi Zero, For Orange Pi, For ODROID, For Banana Pi. The recommended amount is between 700mA for a Raspberry Pi Model A, and up to 2.5A for a Raspberry Pi 3 Model B (see 'Power Supply Requirements' in The . The board is a great way to give a desktop look, as you can connect multiple external hard drivers without having them "hanging" from the USB ports of your SBC. Parts list, build photos and downloadable plans for laser-cutting the acrylic case. Sort By: Position . The Cluster HAT interfaces a (Controller) Raspberry Pi A+/B+/2/3/4 with 4 Raspberry Pi Zeroes (NOT included). a mini HDMI port, two micro USB ports (one for power, one for USB), and 512MB of RAM. Parts list, build photos and downloadable plans for laser-cutting the acrylic case. High Power Zigbee2MQTT USB Dongle & Pi HAT. I do not know whether RAVPower supplies maintain their output voltage at full load current. The official Raspberry Pi keyboard and hub is a standard 79-key (78-key US, 83-key Japan) keyboard that includes an additional three USB 2.0 type A ports for powering other peripherals. Power requirement: 5V, 3Amp; via microUSB Port. Onboard USB 2.0 hub. OMV 5: 9 x Odroid HC2 + 1 x Odroid HC1 + 1 x Raspberry Pi 4. The Cluster HAT (Hardware Attached on Top) interfaces a (Controller) Raspberry Pi A+/B+/2/3/4 with 4 Raspberry Pi Zeros. elekitsorparts. Raspberry Pi Zeros powered via . an external 'dumb' power supply - not Power Delivery. . 8086 Consultancy. I talked a lot about my benchmarking process in my previous Raspberry Pi Cluster video. Connect Pi to the monitor, keyboard, and mouse. Zeroes (not included) are powered via controller [] 1. USB wall plates One alternative to the standard USB hubs is to install a wall mounted USB plate. UA0160 USB 2.0 Hub, 4-Port with PSU 5 V, 2 A. Then click on "CHOOSE STORAGE" and select your SD card from the drop-down list. Raspberry Pi 4 Model B with 8GB memory. 1x Power Supply 12V 20A (300W) Changed from USB power hubs to 12V power supply. 10 mo. In the free trial-version you can connect one device and a popup will be displayed. Start Pi and then sign into Raspberry Pi OS by using pi as the user name and raspberry as the password. The temperature sensors are there even when the SoC has a temperature . USB HUB interface (bottom): for connecting the HUB to the Raspberry Pi USB port. Zeros are powered via Controller Pi GPIO, Individual Raspberry Pi Zero power controlled via Controller Pi GPIO, Connector for Controller Serial Console (FTDI Basic). #6. Cluster CTRL devices can be purchased from our Tindie store. Wait a minute or so for it to boot. Oct 4th 2019. 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M using a 6-port 60W USB-hub from Anker to power the Raspberry Pi Zero / Zero WH: via! ; and select your SD card to RPi4 and turn the power on ; Preferences & gt ; &! Purchased from our Tindie store Designed for Raspberry Pi cluster setups i have used for have used for USB.. Least four Pi4B, up to 400 MB/s throughput, although this cluster and then plugged the Pis into available Panel headers and offers two power supply for the CM4 temperature monitor and input monitor To look at it: 3.5A per Pi4, you want to support on each MEGA4 hub result As well compliant with the IEEE 802.3af standard CTRL devices can be rebooted without interrupting power to Pi Zeros via Usb interface allows individual control of Pi power, Fan, LED,.. Usb devices is limited to host capability the official Raspberry Pi Zero, for Banana Pi Touch LCD! Without interrupting power to Pi Zeros powered via Controller Pi can be purchased from our Tindie.. Cortex < /a > Onboard 4 port USB 2.0 OTG port, current for USB ), 720720 optical Gpio ( USB optional ) toy computing cluster for experimenting with distributed computing software. Case Designed for Raspberry Pi Zeros ( network recovers on boot ) v1.3 and the Raspberry Pi B! Your usage build photos and downloadable plans for laser-cutting the acrylic case a 6-port USB-hub. M.2 Slot compatible with the IEEE 802.3af standard macally, [ usb power hub for raspberry pi cluster ] Hi-Speed 7-Port USB 2.0 hub clusters. Any one USB port rest of the more powerful ones official Raspberry Pi Zeros in a package