That isn't the full model number. There are additional numbers that determine the sub-model of the A315-22 series laptops which can entirely change what hardware is packed inside. Different sub model of that same laptop might be AMD or Intel, or in some cases although not specifically in this case, also potentially even ARM processors.
Somewhere, on a sticker on the backside of the unit, or printed on the battery compartment cover inside, or under the battery, somewhere on the unit is the full model number. That is usually 100% necessary to determine anything about any laptop.
This is the full name: Acer Aspire 3 A315-22-44a9 A4-9120 / 4GB / 256GB
Here is some info from CPU-Z:
Processor:
Name: AMD K15
Code Name: Stoney Ridge
Package: Socket FT4
Specification: AMD A4-9120e RADEON R3, 4 COMPUTE CORES 2C+2G
Mainboard:
Manufacturer: SR
Model: Rose_SR (V1.09)
Bus Specs: PCI-Express 3.0 (8.0 GT/s)
Chispet: AMD | K15 IMC | Rev. 00
Southbridge: AMD | FCH | Rev. 11
BIOS:
Phoenix Technologies Ltd.
Version: V1-09 - AMD AGESA StoneyPI (V1.3.0.G)
Date: 05/15/2020
Memory:
Type: DDR4 | Channel: Single
Size: 4Gbytes
Uncore Frequency: 1000 Mhz
Is this information enough to tell me if it's compatible? If you feel you need more information to make the decisions, i will send you screenshots of the information shown by CPU-Z, so it can look more accurate and detailed.
If you need to know something else, just tell me.
Thanks.