Based on this product's specifications, here are some alternatives and similar models
Memory Module HP DDR3 4GB 1600MHz 1x4GB
Summary description:
The HP 691740-001 memory module offers 4 GB of DDR3 RAM with a clock speed of 1600 MHz. Designed for laptops, it features a 204-pin SO-DIMM form factor and a single 4 GB module layout. This memory upgrade enhances your laptop's performance, allowing for smoother multitasking and improved overall system responsiveness.