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691740-001 ✓ Verified by PartsTable
HP · MEMORY · SO-DIMM
WHAT YOU NEED TO KNOW
SO-DIMM is 260-pin (DDR4) vs 288-pin full DIMM — physically incompatible Common in blade servers, compact 1U, and workstation laptops
NEVER substitute full DIMM for SO-DIMM — different form factor
PRODUCT OVERVIEW
HP 4GB (1*4GB) 1RX8 PC3L-12800S DDR3L-1600MHZ 1.35V SODIMM

HP 4GB (1*4GB) 1RX8 PC3L-12800S DDR3L-1600MHZ 1.35V SODIMM. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MEMORY→ SO-DIMM→ 691740-001
SPECIFICATIONS
Part Number691740-001
ManufacturerHP
InterfaceDDR3
Capacity4GB
Speed1600MHz
COMPONENT DIAGRAM
KEY 260-PIN DDR4 LATCH LATCH LABEL — P/N S/N SPEED 67.6 mm 30.0 mm DDR4 SO-DIMM | 260-pin | 1.2V Laptop / blade server / compact form factor SPEED — DDR4-2133 to DDR4-3200 4GB | 1600MHz | ECC or non-ECC TITLE SO-DIMM PN 691740-001 MFR HP HP 4GB (1*4gb) 1Rx8 Pc3l-12800s DDR3L-16
KEY FEATURES
•
DDR3 Interface
•
4GB Capacity
•
1600MHz Speed
•
DDR3L SO-DIMM
TYPICAL APPLICATIONS
  • Server memory expansion for virtualization workloads
  • Database performance optimization (in-memory computing)
  • VDI and remote desktop session hosting
  • High-performance computing (HPC) clusters
  • Mail server and collaboration platform scaling
  • Application server tier expansion
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
687515-663Compatible
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
compatible
H6Y75AACompatible
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
compatible
687515-161Compatible
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
compatible
687515-351Compatible
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
compatible
687515-352Compatible
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
compatible
687515-361Compatible
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 20
H6Y75AASUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
H6Y75ETSUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
H6Y75UTSUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
P2N46AASUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
P2N46ATSUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
687515-161SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
687515-351SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
687515-352SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
687515-361SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
687515-362SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
687515-364SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
687515-661SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
687515-662SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
687515-663SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
687515-964SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
687515-966SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
691740-001BSUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
691740-005SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
854975-800SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
863491-001SUBSTITUTE
HP 4Gb PC3L-12800S 1600Mhz Non-ECC UB x8 CAS-11 LV SODIMM for Laptops
HP
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FREQUENTLY ASKED QUESTIONS
What is 691740-001?
691740-001 is a HP 4GB (1*4gb) 1Rx8 Pc3l-12800s DDR3L-1600MHZ 1.35V Sodimm manufactured by HP. It is classified as a MEMORY (SO-DIMM).
What parts can replace 691740-001?
There are 12 known substitutes for 691740-001: 687515-663, H6Y75AA, 687515-161 and 9 more. Substitute compatibility should be verified for your specific system.
Is 691740-001 still available?
691740-001 is currently Unknown.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026