Brother HL-5170DNLT is a monochrome (black and white) workgroup laser printer. It features automatic duplex printing, 32 MB of memory, 133 MHz processor, parallel and USB connectivity, which makes it ideal for a business environment. The print speed of this model is 21 pages per minute with first page out in 10 seconds, which is suitable for a fast paced office environment. The print resolution is a high quality 2400 x 600 dpi, which makes each print sharper and clearer. The Brother HL-5170DNLT 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, B6 and extra letter. The Brother HL-5170DNLT 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. The Brother HL-5170DNLT has a 550 sheet total input capacity, it includes 1 x 250 sheet paper tray, 250 sheet lower paper tray and 1 x 50 sheets multi-purpose tray. It's monthly duty cycle is 3,500 pages.