What's this Aquarius thing?

[S1500]

I saw this at a retro gaming store. What does it do?

 

[S1500]

Dangit, this is the 2nd image I've uploaded to atariage that's now sideways. heh

[+Gemintronic]

http://www.digitpress.com/faq/aquarius.htm

 

Mini Expander - was an expansion system that made game playing more

exciting and easier. Came with 2 detachable 6 key 16 position disk hand

controllers (similar to Intellivision controllers but with 6 keys instead

of 12 and no side fire buttons). The unit added 2 additional sound

channels. Had two cartridge slots one for a memory cartridge and the

other for a program cartridge.

 

 

 

UPDATE: Not trying to be an ass by just copying and pasting info. I have one of these too yet forgot the facts involved

[BassGuitari]

It turned the Aquarius into the system it should have been from the start. (Not that it really ever should have been at all by the time it came out. )

FileForm and FinForm require it as they're both cartridge programs that require an additional 16K RAM cartridge.

[carlsson]

Many years ago I acquired an Aquarius hand controller with replaced cable. I was quite surprised the first time I came across the computer itself and found it had nowhere to insert the cable, but that it was part of an expansion unit.