Lenovo 90W 20V Laptop Charger with a Square "Slim Tip" connector (yellow rectangular plug with a center pin) - 2942

Adapter Specifications
Brand / Manufacturer: Lenovo

Model: ADLX90NCC3A

Lenovo Part Numbers (P/N): 36200612 / 45N0249

Output Voltage & Current: 20V — 4.5A (90 Watts)

Connector Type: Rectangular Slim Tip (USB-shaped yellow tip)

Compatible Laptops & Devices
This adapter works across a wide range of Lenovo laptops manufactured roughly between 2013 and 2018 that use the 20V Square Slim Tip and require 90W or less (it will also safely power 45W and 65W models).

1. Lenovo ThinkPad Series
T Series: T431s, T440, T440s, T440p, T450, T450s, T460, T460p, T470, T470p, T540p, T550, T560

X Series: X1 Carbon (Gen 2 / Gen 3), X230s, X240, X240s, X250, X260

Edge / E Series: E431, E440, E450, E460, E470, E531, E540, E550, E560, E570

L Series: L440, L450, L460, L540, L560

S Series: S3, S5, S431, S440, S531, S540

Helix & Yoga Series: ThinkPad Yoga 12 / 14 / 15, ThinkPad Helix

2. Lenovo IdeaPad & Yoga Series
Yoga Series: Yoga 11, Yoga 11S, Yoga 13, Yoga 2 Pro, Yoga 500

Flex Series: Flex 14, Flex 15, Flex 2, Flex 3

G / B Series: G400, G405, G410, G500, G500s, G505, G505s, G510, G700, G710, B490, B50

U / S Series: U330p, U430p, U530, S210, S500, S510p

Z Series: Z410, Z500, Z510, Z710, Z50-70

3. Lenovo Desktop / All-in-One (AIO) Systems
ThinkCentre Tiny Desktop PC: M73, M93p SFF/Tiny, M53

IdeaCentre AIO Series: AIO 520-22AST and other 20V square-tip desktop units.