Version #1(upper left), the White Brick, has a white top and dark brown bottom,  4" X 8" & 2 1/2" high. Version #1was shipped with early 600XL/800XL computers. Output 5 VDC at 1.5 Amp. Atari Part# C061982. Very reliable. Very Rare

Version #2(lower left), the Black Brick, is same shape and size as Version #1but all black, 4" X 8" & 2 1/2" high. Version #2 was shipped with later 600XL/800XL computers. Output 5 VDC at 1.5 Amp. Atari Part# C061982. Very reliable. Very Rare

Version #3(center top), the Ingot, is solid & all black, 3 1/4" X 5" & 2 1/2" high. It was shipped with most 600XL/800XL and some 65/130XE computers. Output 5 VDC at 1.5 Amp. Atari Part# C061982. If this version fails it can damage the computer if not turned off quickly. Not reccomended for unattended operations. If hum bars are seen on the screen disconnect  version #3 power packs.

Version #4(top right), the Box, is slightly smaller than the Ver #3 at  3" X 4 1/2" & 2 1/2" high. It was shipped with most 130XE computers. Output 5 VDC at 1.5 Amp. Atari Part# C061982 Very reliable. Getting hard to find. We reccomend this version for 130XE and 800XL computers.

Version #5(bottom center), the Mini, is the smallest at 2" X 3" & 2" high. It was shipped with most XE Game Systems. Output 5 VDC at 1 Amp. Atari Part# C70042-011. Not as rugged as version #6. For continuous operation use #6 for a 1Amp instead of #5.

Version #6(bottom right), the Logo, is the same size as Ver #4,  3" X 4 1/2" & 2 1/2" high but has an Atari Logo molded into the case. It was shipped with most 65XE computers and later XE Game Systems. Output 5 VDC at 1 Amp. Atari Part# C70042-01 Very reliable. Works great in most applications.