Total Capacity: 32GB. INSIDE YOUR MAC PRO 2013. Your Mac Pro has 4 slots and the maximum possible upgrade is 128GB (4x32GB). Module Capacity: 16GB.
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【First-level Authorized Agency】 Milk-V Duo RISC-V Linux Board CV1800B 1G RAM-DDR2-64MB Compatible with Raspberry Pi Pico Port
Aliexpress UK
Your PC has 2 Slots and can be upgraded to 16GB (2x8GB). INSIDE YOUR DELL OPTIPLEX 3040 - (MICRO PC). Kit Capacity: 16GB.
eBay
CHUWI MiniBook X Laptop Tablet 2 In 1 Intel N150/N100 10.51" FHD IPS Screen 16GB / 12GB RAM LPDDR5 512G SSD Windows 11 Notebook
Aliexpress UK
16GB (4x 4GB). A item" (Gale Mini Monitor bookshelf Speakers) "Great. Quick dispatch. item condition as described. (Energie jeans x2! (Polo Ralph Lauren Sullivan stretch skinny jeans 27/32 BONUS Polo T-shirt), "Good communication, Rob is very attentive. ).
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32GB 16GB 8GB Memoria RAM DDR4 3200MHz 2666 2400 2133 MHz Laptop Memory 260Pin SODIMM PC4-19200 21300 17000 DDR4 Notebook Memory
Aliexpress UK
The only way to check this is by manually looking at your modules. However with a four slot machine like yours this is not an issue as you need to remove all of the existing ram to upgrade, but its worth knowing about.
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Factory Wholesale Sodimm DDR3 4GB 8GB 2GB 1333 1600MHZ for Laptop Memoria Ram
Aliexpress UK
INSIDE YOUR HP Z420 WORKSTATION TOWER. Your machine can take three different types of Ram, ECC UDimm, ECC RDimm and ECC LRDimms. You can not mix and match different types. Max Upgrades are as follows UDimm = 64GB (8x8GB), RDimm = 256GB (8x32GB) and LRDimms = 256GB (8x32GB).
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SSD 64GB 128GB 240GB 120GB 256GB 480GB 512GB 1TB 2TB 960GB Sata3 2.5 Hard Disk Disc 2.5 Internal Solid State Drive
Aliexpress UK
Your PC has 2 Slots and can be upgraded to 8GB (2x4GB). INSIDE YOUR DELL VOSTRO 230 - (MINI TOWER). Kit Capacity: 8GB. Low Density.
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CORSAIR Vengeance LPX DDR3 Kit 8GB 2400MHz 2133MHz 1866MHz 1600MHz 1333MHz Desktop Memory 240Pin DIMM 1.5V DDR3 RAM
Aliexpress UK
Total Capacity: 64GB. INSIDE YOUR MAC PRO 2013. Your Mac Pro has 4 slots and the maximum possible upgrade is 128GB (4x32GB). Module Capacity: 16GB.
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JEYI Memory RAM Heatsink With Thermal Pads, Desktop RAM Cooler DDR Radiation Dissipate for PC DIY DDR2 DDR3 DDR4 DDR5
Aliexpress UK
Part Number HMT451S6BFR8C. For Laptop / Notebook / All in one PC. Fast Dispatch. Fully Working.
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Kllisre RAM DDR4 8GB 16GB Memory 2666MHz 3200MHz Desktop Dimm High Compatible
Aliexpress UK