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.
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)
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
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.
D-Link DES 1005P - Switch - unmanaged - 5 x 10/100 - desktop - PoE
Add 4 external, wall mountable USB 3.0 ports from a single USB connection
The TL-SG1016D 16-port Gigabit Ethernet switch provides you with a high-performance, low-cost, easy-to-use, seamless and standard upgrade to improve old network to 1000Mbps network.
D-Link EasySmart Switch DGS-1100-08 - Switch - managed - 8 x 10/100/1000 - desktop
Connect and network up to 5 Ethernet devices through a single 10/100 Mbps desktop switch
D-Link xStack DGS-3620-52P - Switch - L3 - managed - 48 x 10/100/1000 + 4 x combo SFP/SFP+ + 4 x 10 Gigabit SFP+ - desktop - PoE
D-Link Direct Attach Cable - Stacking cable - SFP+ to SFP+ - 3.3 ft - for D-Link DXS-1100-16, 1210-16, 3400-24, 3600-16; DGS 3630; Web Smart DXS-1210-12
TP-LINK JetStream TL-SG5412F - Switch - managed - 12 x SFP + 4 x combo 1000Base-T - rack-mountable