Brother HL-5150DLT is a monochrome (black and white) workgroup laser printer. This model features an extra 250 sheet tray to boost input capacity. It has a 550 sheet total input capacity, it includes 1 x 250 sheet paper tray, 1 x 50 sheets multi-purpose tray and 1 x 250 sheets lower paper tray. It's monthly duty cycle is 3,500 pages. The Brother HL-5150DLT has a print speed of 21 pages per minute with first page out in 10 seconds, which is suitable for a fast paced office environment. It also features automatic duplex printing,16 MB of memory, 133 MHz processor, parallel and USB connectivity, suitable for a versatile office environment. The Brother HL-5150DLT uses two toner cartridges and one drum unit, the toner cartridges consist of a standard yield and a high yield toner. The standard yield can print up to 3,500 pages at 5% coverage, while the high yield can print up to 6,700 pages at 5% coverage. The toner cartridge model numbers are TN540 (TN-540) which is the standard yield and TN570 (TN-570) which is the high yield toner. The drum unit model number is DR510 (DR-510), which has a duty cycle of 20,000 pages at 5% coverage. It has a print resolution of 2400 x 600 dpi, which makes each print sharper and clearer. The Brother HL-5150DLT media types are envelopes, transparencies, labels, plain paper, bond paper and recycled paper. It's media sizes are letter A size, legal, executive, A4, A5, B5 and B6.