What is the dimension of the second extension for Ram?

The dimension of the second extension for RAM is commonly specified in terms of its height and width. The correct answer, 1x8.7 inches, reflects a standard size for a RAM extension, particularly in scenarios where space is a constraint. This dimension is commonly used in various applications to ensure compatibility with existing hardware and to provide adequate performance without overwhelming the system's specifications.

For example, the 1-inch height allows for a low-profile installation, which is crucial in tight spaces or for systems designed to keep a low form factor. The 8.7-inch width is also a typical measurement ensuring that the RAM module fits securely within the designated slots provided by the motherboard, allowing for optimal contact and electrical connectivity.

In contrast, other options may represent dimensions that are either too large or not standard for typical RAM extensions, which could lead to fitting issues or incompatibility with existing hardware setups. Thus, 1x8.7 inches is the answer that aligns with standard practices in RAM extension sizing.