⚡🖨️ HP 32V 844 mA Printer Adapter
 
(32V DC • 0.844A • 27W • 5.5 mm × 2.5 mm Barrel • No Pin)

This AC adapter delivers 32V of regulated DC power to HP’s compact Photosmart printers. With a 27W capacity and a larger 5.5 mm barrel, it was the standard supply for HP’s portable photo printers in the mid‑2000s.
 
🔧 Charger Form
Input: 100–240V AC, 50/60Hz
Output: 32V DC, 844 mA (≈27W)
Connector: 5.5 mm outer / 2.5 mm inner barrel, no center pin
Common part numbers: 0957‑2120, 0957‑2121
 
🖥️ Compatible Devices
🟦 HP Photosmart Compact Printers
Photosmart 335, 375, 385
Photosmart 425, 475
Photosmart A430, A433, A434
Photosmart A516, A610, A616, A617
Photosmart A710, A716, A717
🟦 HP Photosmart Portable Photo Studios
A433, A434, A516, A710 series (battery‑optional portable printers)
 
✅ Common Uses
🔌 Powering HP’s compact photo printers (4×6″ snapshot printers)
🧩 Replacing lost or damaged OEM 32V 844 mA bricks
🎒 Travel setups with portable Photosmart printers
🧪 Testing small HP photo printers with a known‑good supply
 
🧠 Signal Format
⚡ Input: Universal AC (100–240V)
🔋 Output: Regulated 32V DC, 27W max
🔌 Simple 2‑wire barrel, no center pin
🔁 Not interchangeable with HP’s dual‑rail 32V/16V adapters
 
⚠️ Things to Watch Out For
📉 Not compatible with HP’s 30V or 31V printer bricks
🔌 Connector is larger (5.5 mm × 2.5 mm) than the 4.7 mm × 1.7 mm barrels used on DeskJets/PSCs
🧯 Using the wrong adapter can cause “printer not recognized” or no power
🧪 Always confirm the printer’s underside label (32V 844 mA) before plugging in
 
🛠️ Quick Tips for Beginners
🧭 Check the printer’s underside for “32V 844 mA” rating
🔌 Use only with printers that accept the 5.5 mm × 2.5 mm barrel
🧪 If printer won’t power on, inspect barrel tip for wear or oxidation
🧯 Label adapters clearly to avoid mix‑ups with HP’s 32V/16V dual‑rail bricks
🧵 Keep one in your collection to cover HP’s portable photo printer era