The Lexmark XC4150 is the speed step-up in the XC4-Series at 50 ppm color A4. Same chassis as the XC4140 — 100-sheet single-pass duplex ADF, 7-inch capacitive touchscreen, 650-sheet input expandable to 6,650 sheets — with a faster engine, faster fuser, and slightly more standard memory. Aimed at 12-25 person small offices doing 2,000-6,000 color pages a month who need real burst speed. Print, copy, scan, fax, optional finisher. The 1 thing buyers regret: paying the XC4150 premium for occasional speed. If your job mix is 90% short jobs and 10% long batches, you'll feel the speed bump on that 10% but not the rest. Be honest about whether 50 ppm vs 40 ppm justifies the extra cost. The other regret is not specing the staple finisher. Once you're at this volume, manual stapling becomes a real time sink — the inline finisher pays back in months for any office producing 50+ stapled sets a week.