Model	Analog Inputs	Resolution	Speed	# DACs	Digital I/O
104-AIO16A	16 SE, 8 DIF	16-bit	500kHz	2	16 I/O (8/8)
104-AIO16E	16 SE, 8 DIF	16-bit	250kHz	2	16 I/O (8/8)
104-AI12-8	8	12-bit	100kHz	-	24 I/O (8/8/4/4)
104-AIO12-8	8	12-bit	100kHz	4	24 I/O (8/8/4/4)
104-AIM-32A	32 SE, 16 DIF	12-bit	100kHz	-	-
104-AIM-32	32 SE, 16 DIF	12-bit	-	-	-

Model	Analog Outputs	Resolution	4-20mA	Digital I/O	XT
104-AIO16A	2	12-bit	No	16 I/O (8/8)	Yes
104-AIO16E	2	12-bit	No	16 I/O (8/8)	Yes
104-DA12-4A	4	12-bit	Yes	-	Yes
104-DA12-8A	8	12-bit	Yes	-	Yes
104-DA12-4	4	12-bit	Yes	-	Yes
104-DA12-8	8	12-bit	Yes	-	Yes
104-AI12-8	-	12-bit	Yes	24 I/O (8/8/4/4)	Yes
104-AIO12-8	4	12-bit	Yes	24 I/O (8/8/4/4)	Yes
104-AO12-4	4	12-bit	No	24 I/O (8/8/4/4)	No

Model	Digital I/O	COS IRQ	Counters	XT
P104-DIO-96	96 I/O (8/8/4/4 ×4)	16	-	Yes
P104-DIO-48S	48 I/O (8/8/4/4 ×2)	Yes	-	Yes
P104-DIO-48	48 I/O (8/8/4/4 ×2)	No	-	Yes
104I-DIO-96	96 I/O (8/8/4/4 ×4)	16	-	Yes
104I-DIO-48S	48 I/O (8/8/4/4 ×2)	Yes	-	Yes
104I-DIO-48	48 I/O (8/8/4/4 ×2)	No	-	Yes
104-DIO-24S	24 I/O (8/8/4/4)	Yes	3	Yes
104-DIO-48S	48 I/O (8/8/4/4 ×2)	Yes	3	Yes
104-DIO-24E	24 I/O (8/8/4/4)	-	3	Yes
104-DIO-48E	48 I/O (8/8/4/4 ×2)	-	3	Yes

Model	Digital I/O	Relays/FETs	Counters	COS	XT
104-IDIO-16	16 In & 16 Out	16 FETs	-	Yes	Yes
104-IDIO-16E	16 In & 16 Out	16 FETs	-	No	Yes
104-IDO-16	16 Out	16 FETs	-	No	Yes
104-II-16	16 In	-	-	Yes	Yes
104-IDO-8	8 Out	8 FETs	-	No	Yes
104-IDIO-8	8 In & 8 Out	8 FETs	-	Yes	Yes
104-IDIO-8E	8 In & 8 Out	8 FETs	-	No	Yes
104-II32-4RO	32 In & 4 Out	4 EM	-	Yes	Yes
104-IIRO-16	16 In & 16 Out	16 EM	-	Yes	No
104-IIRO-16E	16 In & 16 Out	16 EM	-	No	No
104-RO-16	16 Out	16 EM	-	No	No
104-IIRO-8	8 In & 8 Out	8 EM	-	Yes	Yes
104-IIRO-8E	8 In & 8 Out	8 EM	-	No	Yes

Model	RS-232	RS-422	RS-485	Max Baud	Isolation	LRG FIFO
104-COM-8SM-T	8	8	8	921.6k	No	No
104-COM-4SM-T	4	4	4	921.6k	No	No
104-COM-2SM	2	2	2	921.6k	No	No
104I-COM-2S	None	2	2	1.8432Mbps	No	Yes
104I-COM-4S	None	4	4	1.8432Mbps	No	Yes
104I-COM-8S	None	8	8	1.8432Mbps	No	Yes
104I-COM-2SM	2	2	2	1.8432Mbps	No	Yes
104I-COM-4SM	4	4	4	1.8432Mbps	No	Yes
104I-COM-8SM	8	8	8	1.8432Mbps	No	Yes
P104-COM232-8	8	None	None	460.8k	No	Yes
104I-COM232-8	8	None	None	460.8k	No	Yes
104-ICOM-2S	None	2	2	115.2k	Port to Port	No
104-COM232-8	8	None	None	230.4k	No	No
104-COM232-4	4	None	None	230.4k	No	No
104-COM232-2	2	None	None	230.4k	No	No
104-COM-8S	None	8	8	115.2k, 921.6k	No	No
104-COM-4S	None	4	4	115.2k, 921.6k	No	No
104-COM-2S	None	2	2	115.2k, 921.6k	No	No

Model	Quad Inputs	Counter Resolution	Receiver Type	Counter Type
104-QUAD-8	8	32-bit	AM26LS32	LS7266R1
104-QUAD-6	6	32-bit	AM26LS32	LS7266R1
104-QUAD-4	4	32-bit	AM26LS32	LS7266R1

Model	Description
P104-WDG-E	PC/104 Plus Watchdog Timer Status Monitor Economy Version
P104-WDG-CSM	PC/104 Plus Watchdog Timer Status Monitor Standard Version
P104-WDG-CSMA	PC/104 Plus Watchdog Timer Status Monitor Advanced Version