Startech.com 4 port hdmi splitter, 4k 60hz hdmi 2.0 video, 1 in 4 out hdmi splitter, 4k hdmi splitter w built in scaler, 3.5mm optical audio port, durable metal housing, hdr hdcp 1x4 hdmi display output splitter hdmi splitter 44k60s video audio splitter...

Startech.com 4 port hdmi switch 4k with fast switching, auto sensing serial control automatic 4x1 hdmi video switcher box vs421hd4ka video audio switch 4 ports

Startech.com 4 port m.2 to sata adapter card, m.2 pcie 3.0 to sata hdd ssd expansion card, asm1064 chipset, m.2 nvme to 4x hdd ssd for windows macos linux interface adapter sata m.2 card

Startech.com 4 port mini displayport mst hub 4k 30hz mini dp to displayport splitter for multiple monitors mdp to dp mstmdp124dp video splitter 4 ports

Startech.com 4 port multi monitor adapter, displayport 1.2 mst hub, 4x 1080p, video splitter for extended desktop mode on windows pcs only, dp to quad dp monitors mst hub dp multi stream transport hub mstdp124dp video splitter 4 ports

The pex4s553 4 port native pci express rs232 serial adapter card with 16550 uart lets you add 4 rs232 db9 serial ports, using a single pci express expansion slot.

Add 3 firewire ports to a desktop computer through a pci slot. This 4 port 3 external 1 internal pci 1394 firewire adapter card lets you connect ipods, mp3 players, portable drives, digital camcorders and more to your desktop computer.

Add 4 internal sata iii 6gbps ports to a computer through a pci express x2 slot. The pexsat34rh 4 port pci express 2.0 sata controller card with hyperduo adds 4 ahci sata iii ports to a computer through a pcie slot x2, delivering multiple internal 6gbps...