Startech.com Serial Adapter With 16550, 16c450 Uart - Dual-profile Plug-in Card - 1 - Pci Express X1

startech.com serial adapter - dual-profile plug-in card - 1 pack - pci express x1 - pc - 4 x number of serial ports external 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. based on a native single-chip design, this 4-port serial adapter card allows you to harness the full capability offered by pci express (pcie), while reducing the load applied to the cpu by as much as 48% over conventional bridge-chip serial cards. the rs232 serial adapter card includes 4 half-height/low-profile brackets, allowing the card to be installed into almost any pc case, regardless of form factor. backed by a startech.com lifetime warranty and free lifetime technical support. more from the manufacturer