The Intel i915AL1 driver is a specific graphics driver for Intel's integrated graphics chipset. The i915 refers to a family of Intel graphics controllers, specifically the Intel 915 series integrated graphics (which are part of Intel's 915G chipset). The AL1 part of the name typically identifies a particular revision or version of the driver that corresponds to certain hardware or software configurations.
If you need the Intel i915AL1 driver, it's most likely for an older Intel integrated GPU, commonly used in systems with Intel Pentium 4 or early Core 2 Duo processors. This driver is typically used on systems running Windows XP or Vista, but might still be applicable on some older hardware with Windows 7 or 8.