Is the Lexmark 2000-Sheet Tandem Tray compatible with other trays?

Yes, the Lexmark 2000-Sheet Tandem Tray can be used with the 1500-Sheet High-Capacity Tray but cannot be used with a 2x550-Sheet Tray.

What types of paper can be used with the Lexmark 2000-Sheet Tandem Tray?

The Lexmark 2000-Sheet Tandem Tray supports card stock, plain paper, recycled paper, and bond paper, specifically only in Letter size.

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Lexmark 2000-Sheet Tandem Tray - 2000 Sheet - Card Stock, Plain Paper, Recycled Paper, Bond Paper - Letter - 20L8803

This input tray supports up to 2000 sheets of 20 lb paper, 60-300 gsm.
This input option is installed directly below a 550-Sheet Tray and includes casters. This tray raises the printer to the correct height to support a 1250-Sheet Staple Hole Punch Finisher or 2250-Sheet Booklet Staple Hole Punch Finisher.
Detects if the paper tray is present, and if paper is present or low.
Only Letter paper size is supported for card stock and various plain, recycled or bond papers in this tray.
Can be used with the 1500-Sheet High-Capacity Tray, but not with a 2x550-Sheet Tray.