Always buy a kit. Never a good idea to buy separate modules. I'm running the Corsair vengeance in my a17. But you can get whatever you like as long as it's ddr5. I can't find a max frequency spec but it has 4800 in it so I would stick with that.

https://www.amazon.com/Corsair-Compatible-Installation-Multitasking-Compatibility/dp/B09X5T42XZ/ref=mp_s_a_1_4?keywords=32gb+ddr5+4800+sodimm+laptop&qid=1683447532&sr=8-4.

https://www.amazon.com/G-Skill-RipJaws-SO-DIMM-CL40-39-39-76-F5-4800S4039A16GA2-RS/dp/B0B1LB2H8Q/ref=mp_s_a_1_29?keywords=32gb+ddr5+4800+sodimm+laptop&qid=1683447610&sr=8-29