This 4GB desktop memory module is a single-rank 1Rx16 DDR4-2666 UDIMM for compatible systems that support 288-pin non-ECC unbuffered memory built with x16 DRAM devices. It transfers at 2666 MT/s, provides up to 21.3GB/s of peak module bandwidth, and operates at the JEDEC-standard 1.2V. Manufacturer, PCB color, label layout, and revision can vary with available inventory.
MTA4ATF51264AZ-2G6, MTA4ATF51264AZ-2G6B1, MTA4ATF51264AZ-2G6D1, MTA4ATF51264AZ-2G6E1, MTA4ATF51264AZ-2G6H1, MTA4ATF51264AZ-2G6J1, M378A5244BB0-CTD, M378A5244CB0-CTD, HMA851U6CJR6N-VK, HMA851U6CJR6N-VKN0, HMA851U6DJR6N-VK, HMA851U6JJR6N-VK, HMA851U6JJR6N-VKN0, RMUA5120ME86H9F-2666, NT4GA64DH4CX4F-HR, TS512MLH64V6D, TS512MLH64V6D-I, TS512MLH64V6DL, TS2666HLH-4G, JM2666HLD-4G, CT4G4DFS6266, CT4G4DFS6266.C4FJ, CT4G4DFS6266.M4FE, AD4U2666J4G19-B, AD4U2666J4G19-S, AD4U2666J4G19-D, AD4U2666J4G19-R, M4U0-4GNX1CIK, M4U0-4GSX1CIK, M4UE-4GNX1CIK-H, M4UE-4GSX15IK-G, M4UI-4GSX1C0K-C, 78.B1GS4.4010B, ST5126UD451693SC, SQR-UD4N4G2K6SNPCB, AX42666N19F/4G, AT4G1D4D2666NS16N12V, KVR26N19S6/4, KCP426NS6/4, KVR26N19S6L/4, 100280747, 933274-001, 01AG830, SM30K25317, 11S01AG830, 8SSM30K25317, L02855-671, L26005-001, L36847-001, 934253-800, 3TK85AA, 3TK85AT, 3TK85TA, 3TQ31AA, 3TQ31AT, 01AG859, 01AG833, 01AG820, 01AG826, 01AG832, 01AG866, 01AG886, ACR26D4U9S1KA-4, HP26D4U9S1ME-4.
These references identify an exact two-module kit, a photographed assembly, or a documented system-specific 4GB 1Rx16 option. They are useful search references but should not replace the complete manufacturer part number when matched modules are required.
Two-Module Kit: CT2K4G4DFS6266 contains two CT4G4DFS6266 modules for 8GB total
Documented 4GB 1Rx16 System-Option References: SNPCND02C/4G, AA086414
Bulk orders and large-volume orders are welcomed. Contact us with the requested quantity, preferred manufacturer part number, matching-revision requirement, and target system model. Matched lots and recurring-volume requests can be quoted when inventory permits.
The systems and boards below have an exact 4GB 1Rx16 service option or a direct QVL match to one or more part numbers above. Processor generation, BIOS revision, and memory-controller limits still apply. Tower and small-form-factor entries use full-size UDIMMs; similarly named Mini, Tiny, and all-in-one versions that require SO-DIMMs are excluded.
✔️ HP 280 Business Desktops: 280 G3, G4, and G5 Small Form Factor; 280 G4, G5, and G6 Microtower; 280 Pro G8 Microtower
✔️ HP 285 and 290 Business Desktops: 285 G3 Microtower; 290 G2 and G3 Small Form Factor; 290 G2, G3, and G4 Microtower
✔️ HP ProDesk 400 Series: ProDesk 400 G5, G6, and G7 Small Form Factor; ProDesk 400 G5, G6, and G7 Microtower
✔️ HP ProDesk 600 Series: ProDesk 600 G4, G5, and G6 Small Form Factor; ProDesk 600 G4, G5, and G6 Microtower
✔️ HP EliteDesk 705 and 805 Series: EliteDesk 705 G4 Microtower and Small Form Factor; EliteDesk 705 G5 Small Form Factor; EliteDesk 805 G6 Small Form Factor
✔️ HP EliteDesk 800 Series: EliteDesk 800 G4, G5, and G6 Small Form Factor; EliteDesk 800 G4, G5, and G6 Microtower; EliteDesk 800 G4 Workstation Edition
✔️ HP Workstation and Retail Families: Z2 Tower G4, Z2 Small Form Factor G4, Z1 Entry Tower G5, Desktop Pro 300 G6 Microtower, and Engage Flex Pro Retail System in non-ECC UDIMM configurations
✔️ Fujitsu ESPRIMO Exact 1Rx16 Options: ESPRIMO D958/B with FMVDM4GSEB; D588/B and WD2/D2 with FMVDM4GSEC; D558/B with FMVDM4GSED; D588/C and D588/CX with FMVDM4GSEF
✔️ Alienware and Gaming Desktop Direct Service Matches: Alienware Aurora R5, Alienware Aurora R6, and Gaming Desktop 5676
✔️ Inspiron Full-Size UDIMM Desktops: Inspiron 3268 Small Form Factor, 3470 Small Form Factor, 3471, 3668 Microtower, 3671, and 3880
✔️ OptiPlex Full-Size UDIMM Desktops: OptiPlex 3046 Mini Tower and Small Form Factor; 3050 Tower and Small Form Factor; 3060 Tower and Small Form Factor; 5070 Tower and Small Form Factor; 7050 Tower and Small Form Factor; 7070 Tower and Small Form Factor
✔️ Precision Full-Size UDIMM Workstations: Precision 3431 Small Form Factor, Precision 3620 Microtower, and Precision 3630 Tower / Tower XL
✔️ Vostro and XPS Full-Size UDIMM Desktops: Vostro 3470 and 3670; XPS Tower 8910 and 8920
✔️ ThinkCentre Full-Size UDIMM Desktops: ThinkCentre M710e Desktop, M720t Type 10SQ, and V520S
✔️ ThinkStation Full-Size UDIMM Workstations: ThinkStation P320 Type 30BK and ThinkStation P330 Types 30C6, 30CY, and 30D1
✔️ ASUS B365 and H610 Motherboards: PRIME B365-PLUS, ROG STRIX B365-F GAMING, and H610M-IM-A
✔️ ASUS AM4 Motherboards: B450M-DRAGON with supported Ryzen 5000 G-Series processors; TUF GAMING X570-PLUS with supported Ryzen 4000-Series processors; ROG Crosshair VIII Formula, Hero, Hero Wi-Fi, Impact, and Dark Hero with the processor family named by the applicable QVL
✔️ ASRock H310 and H410 Motherboards: H310CM-HDV/M.2 SE, H410M-HVS, H410M-HVS R2.0, H410M-HDV/M.2, H410M-HDV R2.0, H410M-H/M.2 SE, H410M-HDVP2, and H410M/ac
✔️ ASRock B460 Motherboards: B460M-HDV, B460M Pro4, B460 Pro4, B460 Steel Legend, and B460 Phantom Gaming 4
✔️ ASRock H470 Motherboards: H470M-HDV, H470M-HDV/M.2, H470M-HVS, H470M-HVS R2.0, H470M-ITX/ac, and H470M Pro4
✔️ ASRock Z490 Motherboards: Z490 Pro4, Z490M Pro4, Z490M-ITX/ac, Z490 Steel Legend, and Z490 Phantom Gaming 4/ac
✔️ ASRock 600-Series DDR4 Motherboards: B660M-C, B660M Pro RS, H670 Steel Legend, H670M-ITX/ax, Z690 Pro RS, and Z690M-ITX/ax
✔️ ASRock Integrated Platform: N100DC-ITX
✔️ Gigabyte Direct 1Rx16 QVL Match: H510M S2P
✔️ NZXT DDR4 Motherboards: N5 Z690 DDR4 and N7 Z690 DDR4; the exact 4GB 1Rx16 module is documented in one-, two-, and four-module configurations
✔️ Kontron Industrial and Extended-Lifecycle Motherboards: D3641-S, D3642-B, D3644-B, and D3646-S under the applicable approved-memory document
The desktop systems below document a 4GB DDR4-2666 UDIMM configuration, but the available system document does not identify the DRAM device width. Confirm x16-device support against the system's current service documentation before ordering.
✔️ Acer Veriton 4GB UDIMM References: Veriton M6660G Tower and Small Form Factor; Veriton M200-B360 Tower and Small Form Factor; Veriton M200-H310 Tower and Small Form Factor; Veriton X4240G Tower and Small Form Factor
✔️ ASUS ExpertPC 4GB UDIMM References: ExpertPC D540MC, D340MC, S340MC, and S641MD
✔️ ASUS ROG Strix 4GB UDIMM References: ROG Strix GL10C and GL10CS long-DIMM configurations, including GL10C-SMY023T and GL10C-SMY028T
✔️ HP Pavilion and Slimline 4GB UDIMM References: Pavilion Desktop TP01-0136d, Pavilion 590-p0018no, Pavilion 590-p0001nf, Slimline 390-050rcn, Desktop M01-F0014nv, and Desktop M01-F212rcn
✔️ HP Pavilion Gaming and OMEN 4GB UDIMM References: Pavilion Gaming 690-0004ns, 690-0015d, 790-0151kl, and OMEN 880-148ne
The boards below directly validate the DDR4-2400 speed-bin sibling of the same 4GB 1Rx16 four-device module construction. The 2666 module is expected to negotiate the lower supported JEDEC speed, but the exact DDR4-2666 suffix was not the tested sample.
✔️ Gigabyte Conditional Topology Matches: B460M D3H, W480 VISION W, Z390 AORUS PRO, Z490 AORUS XTREME, X570 AORUS PRO, and X570 AORUS ELITE WIFI with the processor family named by the applicable QVL
✔️ ASUS Conditional Topology Matches: ROG STRIX B360-I GAMING, PRIME Z370-A, PRIME Z370-A II, PRIME Z370M-PLUS II, and TUF Z370-PLUS GAMING II
✔️ ASRock AM4 Conditional Topology Matches: A320M, A320M Pro4, AB350M-HDV, and X370 Killer SLI with a supported processor and current BIOS
☑️ 4GB capacity in a standard 288-pin DDR4 desktop UDIMM form factor
☑️ Single-rank 1Rx16 construction using four 512Mx16 DRAM devices
☑️ DDR4-2666 transfer rate with up to 21.3GB/s of peak module bandwidth
☑️ JEDEC-standard CL19 timing and 1.2V operation without requiring an overclocking profile
☑️ Non-ECC unbuffered design for compatible consumer, business, workstation, and embedded platforms
☑️ Large exact-option desktop coverage and direct-QVL motherboard coverage
☑️ One module per order unless a larger quantity or matched lot is specifically selected
