⚡🖨️ HP 0957‑2304 Printer Adapter
 
(Dual Output • +32V 1094 mA & +12V 250 mA • Flat Black 3‑Hole Plug)

This AC adapter delivers two regulated DC outputs — 32V and 12V — through a flat, wide 3‑hole connector. It was HP’s standard supply for mid‑range OfficeJet and Photosmart printers that required separate rails for logic and photo systems.
 
🔧 Charger Form
Input: 100–240V AC, 50/60Hz
Output:
+32V DC @ 1094 mA
+12V DC @ 250 mA
Connector: Flat black plug with 3 holes in a line
Common part number: 0957‑2304
Total power: ~35W
 
🖥️ Compatible Devices
🟦 HP OfficeJet Series
OfficeJet 6100 ePrinter (H611a)
OfficeJet 6600 e‑All‑in‑One
OfficeJet 6700 Premium
OfficeJet 7110 Wide Format
OfficeJet 7610, 7612
🟦 HP Photosmart Series
Photosmart 7510, 7515
Photosmart 7520, 7525
🟦 HP DeskJet Series
DeskJet 4082
DeskJet C6487CR, C6487E, C6487F
 
✅ Common Uses
🔌 Powering HP’s mid‑range multifunction inkjets with photo and wireless features
🧩 Replacing lost or damaged OEM 0957‑2304 adapters
🧪 Testing OfficeJet/Photosmart printers with a known‑good 35W dual‑rail supply
 
🧠 Signal Format
⚡ Input: Universal AC (100–240V)
🔋 Output: Dual DC rails (32V + 12V)
🔌 Flat 3‑hole plug, black plastic
🔁 Not interchangeable with HP’s green‑tip (32V/15V) or 0950‑3490 (32V/16V) adapters
 
⚠️ Things to Watch Out For
📉 Connector looks similar to green‑tip dual‑rail bricks — but voltage and current are different
🔌 Not compatible with HP’s barrel‑style 30V, 31V, or single‑rail 32V adapters
🧯 Using the wrong adapter may cause “printer not recognized” or power faults
🧪 Always confirm the printer’s underside label (32V/12V dual input) before plugging in
 
🛠️ Quick Tips for Beginners
🧭 Look for “0957‑2304” on the adapter label to confirm match
🔌 Use only with printers that accept the flat black 3‑hole plug
🧪 If printer won’t power on, inspect plug holes for bent contacts
🧯 Label adapters clearly to avoid mix‑ups with HP’s green‑tip or barrel‑style bricks
🧵 Essential entry for HP’s mid‑2000s dual‑rail printer ecosystem