Appearance: Used.Functionality: Testedto power-on onlyDescription:============As pictured, an Atari1050 5.25β Disk Drive, Serial # 68030 (As in the Motorola chip). Includes thedrive and power supply β no other accessories are available. Manual is availableat: http://www.trailingedge.com/atari8/Atari1050og.pdf.Powers on and drive light blinks every couple of seconds or so.*** Although itappears in good shape, we are unable to fully test this item. Please review thewarranty and returns policy ***Warranty andReturns:=====================We understand thatthere may be compatibility issues, space constraints, or it just doesnβt lookperfect. This item can be returned within 14-days for ANY reason. However,shipping to and from is not refundable. Shipping:=========- Local pickup isalso available at no cost.- Most orders placedbefore 9am will ship the same day.About Us:=========The ComputerPreservation Group is dedicated to the preservation of historical computers. Tohelp fund ongoing operations, select items are made available. To learn more,please visit our website: www.computerpreservation.com. Thank you for your support!Stock#:5388Details from http://www.atarimuseum.com/computers/8BITS/XL/xlperipherals/atari1050.html:The Atari 1050 diskdrive was Atari's replacement to the Atari 810 disk drive. The new Atari 1050 disk drive matched thenew high-tech, low profile line of Atari XL home computer systems. The original Atari 810 could hold singledensity data (88K out of 100K diskettes) which was standard. The new Atari 1050 disk drives wereDUAL-DENSITY disk drives and could use the older Atari 810 diskettes, but couldalso hold data in a new Enhanced Density mode of 127K. Although the standard for disk drives was180K, this additional storage was welcomed by Atari users who bought the diskdrives. The only downside tothe disk drives were their new version of Atari DOS: 3.0 which hadcompatibility problems with its earlier version: 2.0s Atari would later fix this problem with avery well designed and accepted and one of the most popular Atari versions ofDOS: 2.5 Up to 4 Atari diskdrives could be "daisy-chained" together. Using Atari's unique SIO bus (Serial I/O),each drive would connect to the next, forming a chain in which data wastransferred. Although slower thenother I/O buses used on other computers, Atari's SIO bus was a simple andconvenient way for the non-computer literate to more easily add components ontotheir Atari computer systems (other brands of computers required internalcards, ribbon cables, complicated jumper block settings which were geared moretowards the computer hobbyist crowd instead of the common individual withlittle computer knowledge). The disk driveelectronics and its mechanism were done by Tandon, the case design was done byTom Palecki, formerly of Atari's Industrial Design group. Tom was alsoresponsible for the design of the Atari 1055 3.5" disk drive which wasnever released by Atari, Inc. due to its sales in 1984.