Lenovo ThinkPad L14 Gen 4 i7-1355U/8GB/512GB SSD
PRODUCT DESCRIPTION
Lenovo ThinkPad L14 Gen 4, Intel Core i7-1355U, 8GB, 512GB SSD (21H1005RSG) — 3 Years Onsite, Singapore Local Warranty
Stock status. This exact part number is currently at zero inventory. It is still active while stock lasts, and we can offer a closely matching current-generation configuration on request.
About the ThinkPad L14 Gen 4
The ThinkPad L14 Gen 4 is a Lenovo ThinkPad chassis built to the range's usual Singapore-market brief: MIL-STD-810H tested, discrete TPM 2.0, and Lenovo's ThinkPad keyboard and trackpoint layout. This exact part number is a specific factory build; the full option matrix Lenovo publishes for the machine type is in the Chassis and Platform section below.
Where this configuration sits in the range
The L14 Gen 4 is a 14 inch L-series business laptop with two DDR4 SO-DIMM slots. This part number is titled with an i7-1355U CPU and 8GB / 512GB. Only those title fields are asserted here; for panel, adapter, wireless card and OS build detail, ask us to confirm the distributor's current specification.
Who this configuration suits
Fleet buyers who need a specific, historically stocked configuration for parts continuity, image compatibility or a like-for-like replacement. For fresh purchases we usually recommend the current generation of the same chassis line — ask us for the equivalent and we will quote both.
ThinkPad L14 Gen 4 21H1005RSG — Full Specifications
This Configuration
The following fields reflect what the store title states for this part number. A distributor build-sheet block naming a different Lenovo machine has been discarded; nothing below is sourced from it.
| Part number | 21H1005RSG |
| Machine type | 21H1 |
| Model | ThinkPad L14 Gen 4 |
| Processor | Intel Core i7-1355U (per store title) |
| Memory | 8GB (per store title) |
| Storage | 512GB SSD (per store title) |
Chassis and Platform — Lenovo published specifications for machine type 21H1
| Machine type | 21H1 (sibling 21H2) |
| Chassis | ThinkPad L14 Gen 4 (Intel) |
| Processor family | Intel Processor U300; 13th Gen Core i3/i5/i7 (U and P); Core 3 100U refresh part |
| Graphics options | Intel UHD; Iris Xe; Intel Graphics; NVIDIA GeForce MX550 optional |
| Memory topology | Two DDR4 SO-DIMM slots, dual-channel capable — no soldered memory |
| Memory ceiling | Up to 64GB DDR4-3200 |
| Storage | One M.2 2242 slot, PCIe 4.0 x4; Opal 2.0; up to 2TB |
| Display panels published | 14 inch HD (1366x768) TN 220 nits; 14 inch FHD (1920x1080) IPS 250 nits; 14 inch FHD IPS touch 300 nits; 14 inch FHD IPS 400 nits 72% NTSC low-power |
| Wireless options | Intel Wi-Fi 6 AX201 + Bluetooth 5.2; Intel Wi-Fi 6E AX211 + Bluetooth 5.3 |
| WWAN options | Quectel EM05-G 4G LTE CAT4; Fibocom L860-GL-16 4G LTE CAT16; antenna-ready or No support |
| Battery | 46.5Wh, 57Wh or 63Wh — all support Rapid Charge to 80% in 1 hour |
| AC adapter | 45W, 65W or 100W USB-C options (slim-tip variants also published) |
| Audio | Stereo speakers 2Wx2, Dolby Audio (not Atmos on the L-series) |
| Security | Discrete TPM 2.0 TCG / FIPS 140-2; Kensington Nano Security Slot 2.5x6 mm; optional smart card / fingerprint / IR camera |
| Chassis dimensions | 325.4 x 217 x 18.73-19.83 mm; starting at 1.4 kg |
| MIL-STD | MIL-STD-810H military test passed |
| Copilot / AI PC | Not stated — pre-AI-PC generation |
Why This Page Shows Two Specification Groups
The This Configuration block above lists only what the store title asserts for this exact part number: processor, memory and storage. Anything more granular — exact panel, adapter, wireless card — is not asserted here because the distributor build-sheet copy that used to sit in this slot named a different Lenovo machine and could not be trusted for detail.
The Chassis and Platform block underneath quotes what Lenovo publishes for the whole machine type. It tells you what the chassis is capable of — the panels, ports, wireless cards, adapters and warranty terms that Lenovo enumerates — without claiming any single row was fitted to this particular unit.
Reading them side by side is how the storefront tells a part-specific fact apart from a chassis-wide capability. If you need us to confirm a specific option is fitted to this exact part number, ask and we will check with the distributor.
Warranty and Service Cover
Every SourceIT unit is supplied with Singapore local warranty. Lenovo publishes a 3-year onsite base term for this machine type, qualified as (1-yr battery) — the system is covered for three years, the battery for one.
Base warranty terms Lenovo publishes for ThinkPad L14 Gen 4 (21H1):
- 1-year courier or carry-in service
- 1-year limited onsite service
- 3-year (1-yr battery) courier or carry-in service
- 3-year (1-yr battery) limited onsite service
- No base warranty
The 3-year onsite base term carries Lenovo's own (1-yr battery) qualifier verbatim: system three years, battery one. This is the standard PSREF wording for this generation of ThinkPad.
PSREF does not enumerate Premier Support for this chassis. Premier Support and warranty upgrades come from separate Lenovo Services SKUs and are quoted on request.
Register the serial number on Lenovo Support after purchase to activate the Singapore-region base cover.
Ports, Docking and Other Configurations We Stock
Ports on this chassis
- 1x USB-C 3.2 Gen 2
- 1x Thunderbolt 4 / USB4 40Gbps
- 1x USB 3.2 Gen 1 (Type-A)
- 1x USB 3.2 Gen 1 Always On (Type-A)
- 1x HDMI 2.1, up to 4K/60Hz
- 1x Ethernet (RJ-45) — Intel I219-LM (vPro) or I219-V
- 1x microSD card reader
- 1x 3.5 mm headphone / microphone combo jack
- Optional 1x Smart card reader
Docking is via the Thunderbolt 4 / USB4 port. Lenovo ThinkPad USB-C and Thunderbolt docks work on this chassis.
Other configurations of this machine
This part number is at zero inventory. Ask us for a like-for-like quote on a closely matching current-generation configuration, or on a different variant of the same machine type if any remain in the distributor channel.
Questions We Get Asked About This Machine
Is this a Copilot+ PC or AI PC?
No. This machine type predates Lenovo's AI PC and Copilot+ PC classifications. Lenovo's PSREF book for this chassis does not publish an AI PC category field or an NPU TOPS figure.
Is the 3-year onsite base term real?
Yes. Lenovo publishes a 3-year (1-yr battery) limited onsite service option as one of the base warranty terms for this machine type. The battery is covered for one year under that term; the system is covered for three. See the Warranty and Service Cover accordion.
Is this the current generation?
No. This part number is at zero inventory and the chassis is past its launch generation. Ask us for a closely matching current-generation configuration.
