The PC4-3200AA-E-16GB is a DDR4 Registered DIMM (RDIMM) memory module with a capacity of 16GB. Here's a breakdown of its specifications:

1. Memory Type: DDR4 (Double Data Rate 4) - This is the fourth generation of DDR memory, offering improved speed, bandwidth, and efficiency compared to DDR3.

2. Capacity: 16GB - This indicates the amount of data that can be stored on the memory module. In this case, it's capable of storing 16 gigabytes of data.

3. Memory Speed: 3200MHz - This is the speed at which the memory module can transfer data, measured in megatransfers per second (MT/s). A higher MHz value generally indicates faster performance.

4. Form Factor: RDIMM (Registered DIMM) - RDIMMs are memory modules commonly used in servers and workstations. They include a register between the memory controller and the DRAM modules, which helps to improve signal integrity and stability, particularly in systems with large amounts of memory.

5. Number of Modules: 1x16GB - This indicates that the module is a single 16GB module. The "1x" prefix denotes the number of modules included.

Overall, the PC4-3200AA-E-16GB DDR4 RDIMM is designed to provide high-performance and reliable memory solutions for servers, workstations, and other enterprise-grade systems that require robust memory capabilities.