Crucial 8GB DDR5 4800MHz SODIMM – Single 8GB DDR5‑4800 SODIMM laptop memory module, CL40 (40‑39‑39), 1.1V, unbuffered non‑ECC, 262‑pin, with on‑die ECC and on‑module PMIC—compatible with DDR5‑capable laptops and small‑form‑factor systems that support JEDEC 4800MHz SODIMMs.

Product Overview
The Crucial CT8G48C40S5.M4A1 is an entry‑level DDR5 laptop memory module designed to upgrade or expand system memory in modern notebooks and compact PCs. It runs at the JEDEC baseline speed of 4800 MT/s (DDR5‑4800 / PC5‑38400) with CAS latency CL40 and timings 40‑39‑39, at a low 1.1V operating voltage. As a 1Rx16, 8GB (1×8GB) unbuffered, non‑ECC SODIMM, it’s intended for general productivity, web browsing, office work, and light multitasking rather than high‑end gaming or workstation workloads. Being DDR5, it includes on‑die ECC (ODECC) for improved data integrity inside the DRAM chips and an integrated power management IC (PMIC) on the module for more stable voltage regulation compared with DDR4. The 262‑pin SODIMM form factor is standard for current‑generation laptops and some mini‑PCs that explicitly support DDR5 SODIMMs. Compatibility should always be verified against the laptop/PC manufacturer’s QVL or spec sheet (max supported speed, rank, and capacity per slot).

Key Features
8GB DDR5 SODIMM – Single 8GB module for laptops and small‑form‑factor PCs.
4800 MHz (PC5‑38400) – JEDEC baseline DDR5 speed, plug‑and‑play with compatible systems.
CL40 (40‑39‑39) – Standard latency for DDR5‑4800 modules.
1.1V Operation – Lower voltage than DDR4 for improved efficiency.
Unbuffered, Non‑ECC – Typical for consumer laptops; not for servers/workstations requiring registered/ECC RAM.
On‑Die ECC (ODECC) – Internal error correction within DRAM for better data integrity.
On‑Module PMIC – Integrated voltage regulation for more stable DDR5 operation.
262‑Pin SODIMM – Standard laptop/small‑PC DDR5 form factor.

Specifications
- Product Code: CT8G48C40S5.M4A1
- Product Description:
- Capacity: 8GB (1×8GB)
- Memory Type: DDR5 SODIMM
- Speed: DDR5‑4800 (4800 MHz), PC5‑38400
- CAS Latency: CL40
- Timings: 40‑39‑39
- Voltage: 1.1V (DDR5 core); 5V external rail for module
- Rank/Organization: 1Rx16
- ECC: Non‑ECC (user‑visible), with on‑die ECC inside DRAM
- Buffering: Unbuffered (unregistered)
- Form Factor: 262‑pin SODIMM
- Intended Use: DDR5‑compatible laptops and small‑form‑factor PCs (check OEM QVL)