This is definitely a good buy if you need to expand your USB ports. It's small, cheap, and accepts external power (although my kit didn't include the power supply needed for it). It works well even without an external power supply. I can use it to charge my HTC Touch, Philips VOX 150 and Philips GoGear 4GB without an external power supply. It also included a cable that allowed it to be connected to two computers. Although not sure why you need it.
π AuviPal 3-Port Micro USB OTG Hub Adapter with Power Port for Fire Stick 4K, Playstation Classic, Raspberry Pi Zero, Sega Genesis Mini, Super Nintendo NES Classic and More - Set of 2
10 Review
π Sabrent USB Type-C Hub with 4k HDMI, 60W Power Delivery, 1 USB 3.0 Port, 2 USB 2.0 Ports (HB-TC5P) - Multi-Port
10 Review
VEMONT 7-Port USB Hub 3.0 with Individual On/Off Switches, LED Light, and 4ft/1.2m Long Cable - USB Splitter Extension for Laptop and PC Computer
9 Review
π Juiced Systems Silver BizHUB USB-C Multiport Gigabit HDMI Hub with 3 USB 3.0 Ports, Gigabit Ethernet, 4K HDMI, SD/Micro SD, and USB-C Power Delivery
11 Review
π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review
Smartphone Nubia Z11 6/64GB
12 Review
π StarTech.com NETRS232 Serial to IP Ethernet Device Server - DIN Rail Mountable - Serial Device Server - Serial Over IP Device Server (Black)
4 Review
πΆ Netgear Unite AC770S 4G LTE Mobile WiFi Hotspot - Up to 300Mbps Download Speed - Connects up to 10 Devices - Create WLAN Anywhere - 2 MIMO TS-9 External Antenna Connectors - GSM Unlocked - White
8 Review