This is what little documentation I have found so far. It agrees with your memory jumper settings for the 4MB and references some jumpers not mentioned in the link you posted that will identify how many of these cards are in your system. It also talks about a configuration utility you can run for auto configuration and a jumper to clear the auto configuration if you (presumedly) change the memory on the card. Maybe someone has the configuration utility readily available? From what I understand the card does not require the configuration utility.
Anyways, just to get the ball rolling here is what I got.
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SixPak 286 AST Part Number 202344-001
The AST SixPak 286 board offers flexible and powerful memory enhancement for
the AST Bravo/286, AST Premium/286, AST Premium Workstation, IBM PC/AT and
compatible computers. It offers complete software compatibility with Expanded
Memory Specification (EMS) 4.0 software.
The SixPak 286 SmartSwitch configuration software eliminates the need to set
board switches. The software can make the optimal settings for your computer
automatically, or you can select your configuration from easy to use menus.
The SixPak 286 board retains your selected configuration even when your
computer is turned off.
You can upgrade your SixPak 286 board's memory to a maximum of four megabytes
(MB) with single inline memory modules (SIMMs) that snap in and out of your
board socket's. Optional I/O Pak 286 (AST P/N 500560-002) piggyback boards
add one serial port and one parallel port to your SixPak 286 board.
JUMPER SETTINGS
To set the board Identification jumper (E9 through E12): If this is the first
SixPak 286 board in your computer, place the jumper on E9. For the second
board use E10, the third board, E11 and the fourth board, E12. In addition, to
use automatic mode after adding or removing memory, you must set the default
configuration jumper (E8 ) to the alternate position. This clears the old
configuration. For example, if the jumper is on pins 2 and 3, move it to pins
1 and 2. Also,the jumper on (E7) should remain installed to enable parity
error reporting. Jumpers (E1 thru E5) tell the SixPak 286 the amount of memory
on the board, for 512K and 1MB the jumpers should be in the 1-2 position, for
2MB and 4MB the jumpers should be in the 2-3 position.
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There is also a text schematic of the jumpers that I can't get to show correctly, you can look at it here
http://home.earthlink.net/~russellbaker/6PACK286.txt
