The HP LaserJet Enterprise 8501x (AJ7J3A) is the high-capacity print-only mono A3 enterprise printer in the 8501 series — same 70 ppm engine and 250,000-page duty cycle as the 8501dn, but with 2,180-sheet standard input across five trays (100-sheet multipurpose plus four 520-sheet trays) instead of 1,140. Best fit is a workgroup of 50-150 printing 15,000-40,000 pages a month that wants fewer paper-loading interruptions. Auto duplex print, 4.3-inch color touchscreen, Gigabit Ethernet plus USB 2.0/3.0 standard, optional Wi-Fi/NFC/BLE via Jetdirect 3100w. HP Wolf Security stack — Sure Start BIOS self-heal, Memory Shield, Trusted Platform Module, post-quantum cryptography on 25.9.2.2+ firmware — is identical to the rest of the 8501/8601/8801 chassis family. The 176A black toner runs 45,000 pages per cartridge. The 8501x is taller and heavier than the 8501dn (38.2 inches vs 28.1, 207 lb vs 144) because of the extra trays — make sure you have the floor space. Buyer regret: buying the x when the dn would have been fine. If you print under 8,000 pages a month, save the money and get the dn.