Add an RS232 serial port with COM retention to your laptop or desktop computer through USB
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 ).
The ProCurve 10-GbE SFP+ 7m Cable is a A low-price 10-Gigabit connectivity option consisting of a 7 m cable with SFP+ connectors permanently attached to each end.
TP-LINK JetStream TL-SG2216 - Switch - managed - 16 x 10/100/1000 + 2 x combo Gigabit SFP - rack-mountable
Add four external SuperSpeed USB 3.0 ports from a single USB connection
Sabrent HB-MAC3 - Hub - 4 x SuperSpeed USB 3.0 - desktop
The D-Link 4-Port SuperSpeed USB 3.0 Hub (DUB-1340) provides four additional USB 3.0 ports for your PC, allowing you to connect USB devices such as external storage, digital cameras, printers, and more.
Turn a single USB 2.0 port into 7 external USB 2.0 ports
Easily add an additional USB port to your PC or laptop!
TP-LINK JetStream T1600G-52TS - Switch - managed - 48 x 10/100/1000 + 4 x combo Gigabit SFP - rack-mountable
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.
Tripp Lite's B156-004-HD 4-Port DisplayPort 1.2 to HDMI MST Hub allows you to connect four independent HDMI monitors to a single DisplayPort output on your computer.
D-Link Data Center 10GbE Top-of-Rack Switch DXS-3600 - Switch - managed - 24 x 10 Gigabit SFP+ - rack-mountable
Turn your laptop's USB Type-C port into one USB Type-A and one USB Type-C port (5Gbps), plus power and charge your laptop
NETGEAR ProSAFE XS708T - Switch - L3 Lite - smart - 8 x 10GBase-T + 2 x shared 10 Gigabit SFP+ - desktop, rack-mountable
Add four USB 3.0 (5Gbps) ports to your laptop, including three USB Type-A ports, and one USB Type-C port
Tenda TEG3224P 24-Port 10/100/1000 w/ 4 Shared SFP POE Managed Switch
The NG5P 5-Port 10/100/1000 Mbps Desktop Gigabit Ethernet Unmanaged Switch adds 10/100/1000 Mbps Ethernet capacity to your home office, small office, workgroup or creative production environment.
TP-LINK JetStream T1700X-16TS - Switch - smart - 12 x 10/100/1000 + 4 x 10 Gigabit SFP+ - rack-mountable
Plugable USB3-HUB7BC - Hub - 7 x SuperSpeed USB 3.0 - desktop
Turn your laptop’s USB Type-C port into four USB Type-A ports (5Gbps) using this bus-powered hub.
Add four USB 3.0 (5Gbps) ports to your laptop, including three USB Type-A charge-and-sync ports, and one USB Type-C port
StarTech.com 4 Port PCI Express (PCIe) RS232 Serial Card w/ Power and ESD - Serial adapter - PCIe low profile - RS-232 x 4