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
Sabrent HB-MAC3 - Hub - 4 x SuperSpeed USB 3.0 - desktop
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.
D-Link xStack DGS-3450 - Switch - managed - 48 x 10/100/1000 + 4 x shared SFP - desktop
An 8-port RS-232/422/485 serial hub with DB9 connectors.
StarTech.com 5 Port Industrial Gigabit Ethernet Switch - DIN / Wall-Mount - Switch - 5 x 10/100/1000 - desktop, DIN rail mountable, wall-mountable - DC power
Plugable USB3-HUB7BC - Hub - 7 x SuperSpeed USB 3.0 - desktop
StarTech.com 5 Port Unmanaged Industrial Gigabit PoE Switch with 4 Power over Ethernet ports - Switch - unmanaged - 4 x 10/100/1000 (PoE) + 1 x 10/100/1000 - wall-mountable - PoE (62 W)
The Intellinet 8-Port Gigabit Ethernet PoE+ Switch (560641) is designed to pass both data and electrical power to a number of PoE-compatible devices via standard Cat5e or Cat6 network cables.
CyberPower CP-H430P - Hub - 4 x SuperSpeed USB 3.0 - desktop
Add seven USB 3.0 ports with this DIN rail or surface-mountable metal hub
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 Web Smart DXS-1210-12TC - Switch - managed - 8 x 10GBase-T + 2 x 10 Gigabit SFP+ + 2 x combo 10 Gigabit SFP+ - desktop, rack-mountable
Buffalo’s BS-GS2008P 8-Port Gigabit PoE Smart Switch offers an easy and cost-effective way to extend your business network at gigabit speeds with advanced management features and the convenience of Power over Ethernet (PoE).
Tripp Lite's NSU-G24 combines a 1.44kW single-phase 120V Basic Power Distribution Unit (PDU) with an Unmanaged 24-Port Gigabit Ethernet Switch for an all-in-one 1U rack-mount solution.
16 x PoE ports, IEEE 802.3at/af Power-over-Ethernet (PoE+/PoE), Endspan, Rackmount