Amazon Renewed
HP 2021 HP 750W Power Supply PSU 511778-001 506822-201 506821-001 HTSNS-PL18 (Renewed)
Bottom line: The HP 2021 HP 750W Power Supply PSU 511778-001 506822-201 506821-001 ($48.99 on Amazon as of 2026-10-06): 750W DC output from an HP OEM HTSNS-PL18 power supply; main trade-off: refurbished, not new, and may arrive in a generic box.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 750W DC output from an HP OEM HTSNS-PL18 power supply
- ✓ Matches HP spare 511778-001 and part 506822-201 for exact-swap repairs
- ✓ Generic part 506821-001 and unit PS-2751-2CB-LF listed to help you cross-reference
- ✓ Certified Refurbished: functionality tested, cleaned, inspected and repackaged
- ✓ Backed by a minimum 90-day warranty on the renewed unit
Cons
- ✗ Refurbished, not new, and may arrive in a generic box
- ✗ Warranty is only a 90-day minimum; check the listing for seller terms
- ✗ No 80 Plus efficiency rating stated in the listing
- ✗ Connector types and cable lengths are not specified
Manufacturer description
Specifciations• Brand: HP• Model: HTSNS-PL18• Generic Part Number: 506821-001• Part Number: 506822-201• Spare Part Number: 511778-001• Unit Part Number: PS-2751-2CB-LF• DC Power: 750WSKU: T6G004099
SpecPicks Verdict
SpecPicks scored HP 2021 HP 750W Power Supply PSU 511778-001 506822-201 506821-001… using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Amazon Renewed's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com
- Brand: HP HTSNS-PL18 Power Supply PSU
- Generic Part Number: 506821-001
- Part Number: 506822-201
- Spare Part Number: 511778-001
Full Specifications
| Brand | HP |
|---|---|
| Wattage | 750 watts |
| Fan Count | 2 |
| Form Factor | AT |
| Part Number | 506822-201 |
| Connector Type | ATX |
| Cooling Method | Air |
| Number of Fans | 2 |
| Output Wattage | 750 Watts |
| Item Dimensions | 15 x 10 x 9 inches |
| Mfr Part Number | 511778-001, 506822-201, 506821-001-cr |
| Spare Part Number | 511778-001 |
| Compatible Devices | Personal Computer |
| Generic Part Number | 506821-001 |
| Warranty Description | 90 days limited warranty |
| Maximum Input Voltage | 125 Volts (AC) |
| Minimum Input Voltage | 110 Volts (AC) |
| Item dimensions L x W x H | 15 x 10 x 9 inches |
| System Bus Connector Type | ATX |
| Connector Type Used on Cable | ATX |
Ready to buy?
HP 2021 HP 750W Power Supply PSU 511778-001 506822-201 506821-001 HTSNS-PL18 (Renewed) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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