Samsung ProXpress M3870FW: wireless black MFP with reversing duplex capture review

The exact model declares up to 40 one-sided Letter pages/min, compared with 38 A4. The service table separately declares up to 20 Letter or 19 A4 duplex images/min. Scanner images/min and copy rates are separate. The exact manufacturer model page recommends 1,500–3,500 pages per month, while the 80,000-page duty figure is a maximum ceiling. These declarations are not measured performance or a recommendation to run at the ceiling.

The operating guide, exact USA brochure and current manufacturer model specification establish a 250-sheet cassette plus 50-sheet multipurpose tray, with the ordinary-paper table supporting Letter, Legal and A4 at the declared 80 gsm capacity basis. The 2016 configuration list’s one-sheet bypass line conflicts with those operating sources and is not used as the base feed description. A 520-sheet expansion cassette is optional. Adjust the tray guides and the duplex-unit guide for the actual Letter/Legal or A4 position; match source, size and type in the device and driver. Suitable envelopes use the multipurpose path under original stock, orientation, adhesive and margin conditions. The special-media rear-output routine is separate from automatic duplex, which requires the appropriate closed return path. Clear Legal output before excessive stacking; the guide warns about more than 50 one-sided Legal sheets in the output area.

The exact model has a color CIS flatbed and a 50-sheet automatic reversing document feeder. The USA XAA list explicitly calls it RADF, so it supports automatic two-sided original capture without being single-pass. The feeder’s original range reaches 216 x 356 mm, with effective scan margins, while the glass is limited to 216 x 297 mm and its own margins. Letter and A4 fit both routes; Legal fits the feeder and is not assigned to the glass. Load feeder originals face up and suitable glass originals face down at the upper-left registration guide. Color capture does not provide color printed output.

M3870FW has standard Ethernet, USB and built-in Wi-Fi, with Wi-Fi Direct as a separate peer method. The reviewed Windows network MFP plan supports computer printing and scanning over Ethernet or infrastructure Wi-Fi, with a registered computer destination and compatible installed software. USB is a separate local MFP arrangement. A front USB memory port is not the computer USB connection. Ordinary fax additionally needs the LINE socket and compatible analog telephone service; it is not carried by the Ethernet or Wi-Fi radio. Historical cloud-print and app listings do not establish present service availability.

This exact 3870 model uses an integrated toner cartridge system rather than the separate drum arrangement of some 3875 relatives. The USA table identifies MLT-D203S at a declared 3,000 pages, MLT-D203L at 5,000 and MLT-D203E at 10,000 under ISO/IEC 19752, with a 3,000-page supplied cartridge declaration. The 15,000-page D203U entry belongs to the higher compatible model group and is not assigned to M3870FW. Check the exact regional cartridge, installed condition and software compatibility; declared yield is not remaining life or current running cost.

Compatible Windows MFP software supports USB and network computer scanning. The USB routine uses Scan to PC; network operation needs installed scanner components, an enabled Scan to PC destination and its registered ID/password, or compatible network TWAIN/WSD software. The guide’s WIA routine is USB-specific. Included PIN-release printing is a distinct driver Confidential mode: enable RAM Disk through SyncThru Web Service, send a compatible job with its password, then use Job Management > Secured Job at the numeric-keypad panel to release or delete it. Complex jobs can exceed RAM Disk capacity and may need optional memory. This is not an unlimited storage promise. AirPrint has its own certified-model, local-network, Bonjour/mDNS and IPP conditions; desktop PIN, scanning and duplex settings are not borrowed into the mobile plan.

The later user guide and current exact-model manufacturer table agree on an approximately 469 x 444.3 x 482.1 mm body, or about 18.5 x 17.5 x 19 inches, and 17.07 kg including consumables, about 37.6 lb. Measurements exclude handset and other accessories. An earlier service summary gives inconsistent heavier weight and slightly different width, so the later operating guide and exact model table govern this body description. Extended paper handling, rear access and lifting the scanner need additional working room. The US XAA configuration and manufacturer table establish a 110–127 VAC, 50/60 Hz edition; a separate 220–240 VAC edition also exists. Verify the actual rating label.