Turn a single USB 2.0 port into 4 external USB 2.0 ports
Add an RS232 serial port with COM retention to your laptop or desktop computer through USB
Add four external SuperSpeed USB 3.0 ports from a single USB connection
4 Port Aluminum USB 2.0 Hub for Mac boasts an elegant aluminum design to match the style and color of all your Mac devices. Add up to 4 peripherals quickly and easily with the Sabrent 4-Port USB 2.0 Hub.
Add four USB 3.0 ports to your laptop or Ultrabook using this slim, portable hub with an extended-length cable
IOGEAR's 4-Port USB 2.0 Hub provides 4 Hi-Speed USB 2.0 ports for your USB connectivity needs. This device is USB 2.0 compliant and provides a high-speed data transfer rate.
The 4-Port Powered Desktop Hub adds four quick-access USB ports to your PC, Mac, or laptop/netbook/Ultrabook-perfect for connecting an external hard drive, smartphone, MP3 player or any other USB-compatible device to your computer.
A 4-port RS-232 serial hub with DB9 connectors and USB interface.
An 8-port RS-232 serial hub with DB9 connectors and USB interface.
D-Link DGS-1100-24P - Switch - managed - 12 x 10/100/1000 (PoE+) + 12 x 10/100/1000 - desktop, rack-mountable - PoE+ (100 W)
Tripp Lite U360-004-MINI is a compact, 4-Port USB 3.0 SuperSpeed hub, with built-in cable, that provides up to 5Gbps transfer rates in a compact, portable format ( Computer and devices must be both USB3.0 rated to achieve maximum 5Gbps speeds ).
D-Link Web Smart DGS-1210-52MP - Switch - managed - 8 x 10/100/1000 (PoE+) + 40 x 10/100/1000 (PoE) + 4 x SFP - desktop, rack-mountable - PoE+ (370 W)
StarTech.com 5 Port Unmanaged Energy-Efficient Gigabit Ethernet Desktop / Wall Mount Network Switch - Switch - unmanaged - 5 x 10/100/1000 - desktop, wall-mountable
Expand your network connectivity with this rugged unmanaged 10/100Mbps switch
Extend your 10/100Mbps network by up to 1km over Ethernet or RJ11 phone lines
C2G USB 2.0 Compact 4-Port USB 2.0 Hub - Hub - 4 x USB 2.0 - desktop
NETGEAR ProSafe GS108v4 - Switch - unmanaged - 8 x 10/100/1000 - desktop, wall-mountable
Add four rugged external USB 2.0 ports from a single USB connection
The DES-1008P 8-port switch can convey power to up to four network devices via the usual network cables using Power over Ethernet technology. This provides a cost-effective entry-level solution for users wishing to make the most of their network.
StarTech.com 2 Port Industrial PCIe RS232 Serial Card w/ Power and ESD - Serial adapter - PCIe 2.0 - RS-232 x 2
Easily add more computers or other Ethernet devices to your network
D-Link DES 1005P - Switch - unmanaged - 5 x 10/100 - desktop - PoE