View source for Ast I∕O Plus II

{{Device Infobox/Begin
 | Bus type = ISA
 | Bus width = 8-bit
 | Bus speed = 4.77 MHz
 | 8-bit ISA compatible =
 | Manufacturer = Ast Research
 | Compatible with = [[Has compatibility::RS232]], [[Has compatibility::LPT]], [[Has compatibility::Gameport]], [[Has compatibility::Apple II Gameport]], [[Has compatibility::RTC]]
 | Connectors = [[Has connector::Gameport]], [[Has connector::LPT]] <!-- Other connectors aren't shipped with the card so aren't included -->
 | Requires -5VDC = No
 | Requires -12VDC = Yes
 | Config = [[Config method::Jumpers]]
}}
{{Device Infobox/IO
 | Serial ports = 2
 | UART = 8250 <!-- Based on IC model numbers -->
 | COM1 = Yes
 | COM2 = Yes
 | COM3 = No
 | COM4 = No
 | Parallel ports = 1
 | Bi-dir = No <!-- Assumption based on age -->
 | ECP = No
 | EPP = No
 | LPT1 = Yes
 | LPT2 = Yes
 | LPT3 = No
 | LPT4 = No
 | Game ports = 1
}}
{{Device Infobox/End
 | Driver = N/A
}}

The '''Ast Research I∕O Plus II''' is a serial/parallel/gameport board.

Socket U4 is optional, and can be populated with a compatible UART to provide a second serial port.  In the main photo a Winbond W86C250B can be seen here.  This is an equivalent part to the INS8250N-B providing the first serial port.  Both these parts are 8250-compatible UARTs.

== Additional photos ==

<gallery mode="packed">
Image:Ast I∕O Plus II underside.jpg|Underside
</gallery>

== Related links ==

* FCC ID is [https://fccid.io/FHQ484AC-1024 FHQ484AC-1024]
* [https://th99.bl4ckb0x.de/i/A-B/51237.htm TH99]
* [http://toastytech.com/manuals/MultiIOII.pdf Manual]