Lantisri
12V Power Cord for Seagate Power Supply Adapter Replacement, UL Listed
Bottom line: The Lantisri 12V Power Cord for Seagate Power Supply Adapter Replacement: 12V 2A (24W max) output suits Seagate desktop drives drawing 0.1A-2A; main trade-off: listing gives both 2.5mm and 2.1mm inner pin sizes, so check your plug first.
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Pros & Cons
Pros
- ✓ 12V 2A (24W max) output suits Seagate desktop drives drawing 0.1A-2A
- ✓ 6ft DC cord reaches outlets behind desks and media cabinets
- ✓ Fits Backup Plus, Expansion, Central, GoFlex Desk and FreeAgent drives
- ✓ Universal 100-240V 50/60Hz input handles most mains voltages
- ✓ UL, FCC, CE and RoHS certified, with a Level VI efficiency rating
Cons
- ✗ Listing gives both 2.5mm and 2.1mm inner pin sizes, so check your plug first
- ✗ Third-party replacement, not an original Seagate-branded power supply
- ✗ For desktop drives only; USB-powered portable drives don't use it
- ✗ Safety bullet calls it a 9V adapter, a confusing typo in the listing
Manufacturer description
Lost or damaged the power brick for your Seagate desktop drive? The Lantisri 12V power supply adapter replaces it for Seagate external hard drives that draw between 0.1A and 2A. It takes AC 100-240V at 50/60Hz and puts out a steady DC 12V 2A, up to 24W. Power runs over a 6ft DC cord to a center-positive (C+) 5.5mm barrel connector, listed with a 2.5mm/2.1mm inner pin. It fits a large part of the Seagate desktop lineup. That includes Backup Plus Desktop models such as STDT4000100 and STDT8000100, and Expansion Desktop drives from the 1TB STBV1000100 up to the 20TB STKP20000400. It also covers…
SpecPicks Verdict
SpecPicks scored Lantisri 12V Power Cord for Seagate Power Supply Adapter Replacement using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Lantisri's external storage 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 external storage 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.
Frequently Asked Questions
Will this adapter work with my Seagate Expansion Desktop drive?
It lists Expansion Desktop models including STBV1000100, STBV2000100, STEB2000100, STEB3000100, STBV4000100, STEB4000100, STEB5000100, STEB10000, STKP12000 and STKP20000400. Match the model number on your drive's label to this list before you buy.
What are the input and output specs of the Lantisri 12V adapter?
Input is AC 100-240V at 50/60Hz. Output is DC 12V at 2A, up to 24W, and it is rated for Seagate devices that draw between 0.1A and 2A.
What size is the barrel plug and what polarity does it use?
It uses a center-positive (C+) 5.5mm barrel connector on a 6ft DC cord, listed with a 2.5mm/2.1mm inner pin. Check your original Seagate adapter's plug and polarity markings to confirm a match.
Does it replace my original Seagate power adapter model?
It names many original Seagate adapter models it replaces, including KSAS0241200150HU, KSAS0241200200D5, WA-24E12, WA-24C12U, DA-24B12, ADS-24P-12, ADS-24S-12, 1224G and ACE024A-12. If your original adapter is 12V and 2A or less, compare the plug size too.
What safety protections does this power supply have?
It is UL, FCC, CE and RoHS certified, meets Level VI efficiency standards and uses flame-retardant materials. Built-in protection covers over-voltage, over-current, short circuits, overload, overheating and surges.
Key Features
- 12 Volt 2 Amps Power Adapter: Input: AC 100-240V 50/60Hz, Output: DC 12V 2A compatible with seagate devices requiring 0.1A-2A (Max 24W). Features center positive polarity (C+) and 5.5x2.5mm/2.1mm barrel connector with 6ft DC Cord.
- 12V Power Supply Compatible with Seagate Devices: BlackArmor WS 110 (500GB, 1TB, 1.5TB, 2TB); SRD0NF2, SRD0SD1, SRD0SD0, SRD00F2; ST30000U2; Seagate Backup Plus Desktop External Hard Drive Models: (2TB) STCA2000100, STDT2000100; (3TB) STCA3000101, STDT3000100, STDU3000101; (4TB) STCA4000100, STDT4000100, STDU4000100; (5TB) STDT5000100; (6TB) STDT6000100; (8TB) STDT8000100, STEB8000100; Expansion Desktop models: (1TB) STBV1000100; (2TB) STBV2000100; STEB2000100; (3TB) STEB3000100; (4TB) STBV4000100, STEB4000100; (5TB) STEB5000100; (8TB) STDT8000; (10TB) STEB10000; (12TB) STKP12000; (20TB) STKP20000400;
- AC DC Charger Compatible with Seagate Central Personal Cloud Storage:( 2TB) STCG2000100, (3TB) BSTCG3000100, (4TB) STCG4000100, (8TB) STCG8000100; Seagate Model Numbers: STDSA10G-RK, STDSB10G-RK; 9SF2A4-500, 9SF2A2‑500, 9NK2A6-500, 9NK2A6-510, 9NK2AE-500, 9NK2AG-500, 9NK2AL-500, 9NK2AL-510, 9NK2AM-510, 9ZC2AG-500, 9NL6AR-500, 9SE2A2-571, 9BJ83G-561, 9W2681-540, 9W2874‑560, 9ZC2A3-500, 9ZC2A3-501, 9ZC2A8-500, 9ZC2A8-501, 9ZC2AG-501, 9ZQ2A1-500, 9NL7A8-510, 9NL6AG-500, 9SF2A2-500-500GB
- Seagate Power Adapter Models: KSAS0241200150HU, KSAS0241200200D5;WA-24E12,WA24E12, WA-24C12U, WA-18Q12FU; DA-24B12; ADS-24P-12, ADS‑24P‑12‑2, ADS-24S-12, ADS-18E-12N; 1224G, 1224GPCU; ACE024A-12, ACE018A-12, S018BU1200150, 1DXAP2-500, 1DZ9N4-500; Part Numbers: 9NK2A6-510, 9NK2AG-500, 9NK2AL-500, 9ZC2A8-501, 9ZC2AG-501, 2N2AP2-500, 2N2AP1-570, 3EHAP4-500, 3EGAPE-500, 3EGAPD-500, 3EGAP8-500, 9NK2AL-510; Seagate FreeAgent Series: FreeAgent GoFlex Desk; FreeAgent Desk ; FreeAgent Desk for Mac; FreeAgent Xtreme; FreeAgent Theater; FreeAgent Theater+; DockStar;
- Certified Safety: UL, FCC, CE, RoHS certified 9V power adapter with Level VI efficiency standards, Flame-retardant materials. Built-in protection against over-voltage, over-current, short circuit, overload, overheating, surge, and lightning to help protect your devices
- Please kindly confirm your device voltage, current, polarity, and connector size before purchase. Contact Lantisri customer service if you need assistance.
Full Specifications
| Brand | Lantisri |
|---|---|
| Color | Black |
| Weight | 10g |
| Current | DC |
| Voltage | 12 volts |
| Wattage | 24 watts |
| Amperage | 2 A |
| Plug Type | Type A 2 pin |
| Model Name | Power Adapter 12V 2A |
| Power Plug | Type A - 2 pin (North American) |
| Unit Count | 1 Count |
| Form Factor | Plug |
| Model Number | SG-120200024AU |
| Power Source | Corded Electric |
| Compatibility | Mac |
| Input Voltage | 240 volts |
| Mounting Type | Wall Mount |
| Built-In Media | 12V AC Adapter |
| Connector Type | 2-Pin Barrel Connector |
| Output Current | 2 A |
Ready to buy?
12V Power Cord for Seagate Power Supply Adapter Replacement, UL Listed 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.
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