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Here are the main features of our range of serial asynchronous multiport boards for PCI and ISA :

PCI & PCI-X computers	xRSUNI	xRSUNI-LP	UNXPCI
Number of serial lines	2, 4 or 8	4 or 8	4 or 8
Bus compatibility	PCI PCI-X	PCI PCI-X	PCI
Power supply	Universal +3.3VDC +5VDC	Universal +3.3VDC +5VDC	+5VDC
PCI form factor (3)	SP	LP MD1	SP
RS232
RS232 isolated	-	-
RS422		-
RS422 isolated
RS485		-
RS485 isolated
BdC isolated	-	-
TTL serial output	-	-
TX & RX Fifos	128	128	128
ESD Protection
Interchangeable Oscillator	-	-
Maximum speed	1.8 Mbps (2)	1.8 Mbps (2)	1.8 or 3.75 Mbps (1)

Note 1 :

Standard maximum speed of the UNX-PCI board is 1.8 Mbps (29.4912 Mhz oscillator) and can go up to 3.75 Mbps (optional 60 Mhz oscillator).
Other oscillators can be mounted on the board to satisfy communication speed specific requirements.

Note 2 :

1.8 Mbps on the xRSPCI boards can be reached in RS422/RS485 modes only, RS232 mode features a 1 Mbps maximum speed.

Note 3 :

SP means "Standard Profile" for standard form factor PCI bus.
LP means "Low Profile MD1" for low profile form factor PCI bus.

ISA & EISA computers	FAST400	xRS232	UNX
Number of serial lines	2	2, 4 or 8	4 or 8
Bus compatibility	ISA 8/16, EISA	ISA 8/16, EISA	ISA 8/16, EISA
Power supply	+5VDC	+5VDC	+5VDC
RS232	-
RS232 isolated		-
RS422	-	-
RS422 isolated		-
RS485	-	-
RS485 isolated		-
BdC isolated	-	-
TTL serial output	-	-
TX & RX Fifos	16	16	16
ESD Protection
Maximum speed	500 Kbps	115.2 Kbps	115.2 Kbps

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