It's real COM Port in your computer, not USB to COM port
high compatible with serial type device.
It's real Parallel Port in your computer, not USB to
Parallel port high compatible with Parallel type device
(Printer, KeyPro, Scanner).
FEATURES
* 2 independent RS-232 serial ports with communication
speeds up to 430Kbps
* Designed to meet PCI-Express Base Specification
Revision 1.1
* Supports x1,x2,x4,x8,x16（lane）PCI-Express Bus
connector keys
* High speed 16C550 compatible UART controller on-board
* Supper IEEE 1284 Parallel ports standard
ECP（Enhance Capacity Port）/ EPP（Enhance Parallel
Port）
SPP（Standard Parallel Port）
* On-chip hardware auto flow control to guarantee no
data loss
* Built-in 16 byte hardware FIFO & 256K byte DMA
software FIFO
* Support DOS,Linux,MAC,Microsoft Windows 2000/XP/2003
and Vista
