| No. | FRU (Overall) | FRU no. | CRU | 
|   |   |   |   | ID | 
|   |   |   |   | 
| 21 | Thermal module for W520, 45W | 04W0438 | N | 
|   | • | 4249-CTO |   |   | 
|   | • | 4260-CTO |   |   | 
|   | • | 4270-CTO, 26x |   |   | 
|   | • 4276-CTO, 25x, 27x, 28x, 29x, 2Bx, 2Cx, 2Dx, 2Fx, 2Gx, 2Hx, 2Kx, 2Lx, 2Mx, 2Px, 2Rx, |   |   | 
|   |   | 2Vx, 2Wx, 34x, 35x, 37x, 38x, 39x |   |   | 
|   | • | 4281-CTO |   |   | 
|   | • 4282-CTO, 25x, 26x, 27x, 29x, 2Ax, 2Bx, 2Dx, 2Ex, 2Fx, 2Gx, 2Hx, 2Jx, 2Kx, 2Mx, 2Nx, |   |   | 
|   |   | 2Px, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 2Xx, 32x, 35x, 36x, 37x, 38x, 3Bx, 3Cx, 3Dx, |   |   | 
|   |   | 3Ex, 3Fx, 3Gx, 3Hx, 3Px, 3Qx, 3Rx, 3Sx, 3Ux, 45x, 4Bx, 4Cx |   |   | 
|   | • 4284-CTO, 25x, 26x, 3Tx, 3Ux, 3Vx, 3Xx, 3Yx, 3Zx, 45x, 46x, 47x, 48x, 4Ax, 4Bx, 4Cx, 4Dx |   |   | 
|   |   |   |   | 
| 21 | Thermal module for W520, 45W | 04W1576 | N | 
|   | • | 4249-CTO |   |   | 
|   | • | 4260-CTO |   |   | 
|   | • | 4270-CTO, 26x |   |   | 
|   | • 4276-CTO, 25x, 27x, 28x, 29x, 2Bx, 2Cx, 2Dx, 2Fx, 2Gx, 2Hx, 2Kx, 2Lx, 2Mx, 2Px, 2Rx, |   |   | 
|   |   | 2Vx, 2Wx, 34x, 35x, 37x, 38x, 39x |   |   | 
|   | • | 4281-CTO |   |   | 
|   | • 4282-CTO, 25x, 26x, 27x, 29x, 2Ax, 2Bx, 2Dx, 2Ex, 2Fx, 2Gx, 2Hx, 2Jx, 2Kx, 2Mx, 2Nx, |   |   | 
|   |   | 2Px, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 2Xx, 32x, 35x, 36x, 37x, 38x, 3Bx, 3Cx, 3Dx, |   |   | 
|   |   | 3Ex, 3Fx, 3Gx, 3Hx, 3Px, 3Qx, 3Rx, 3Sx, 3Ux, 45x, 4Bx, 4Cx |   |   | 
|   | • 4284-CTO, 25x, 26x, 3Tx, 3Ux, 3Vx, 3Xx, 3Yx, 3Zx, 45x, 46x, 47x, 48x, 4Ax, 4Bx, 4Cx, 4Dx |   |   | 
|   |   |   |   | 
| 21 | Thermal module for W520, 45W | 04W1577 | N | 
|   | • | 4249-CTO |   |   | 
|   | • | 4260-CTO |   |   | 
|   | • | 4270-CTO, 26x |   |   | 
|   | • 4276-CTO, 25x, 27x, 28x, 29x, 2Bx, 2Cx, 2Dx, 2Fx, 2Gx, 2Hx, 2Kx, 2Lx, 2Mx, 2Px, 2Rx, |   |   | 
|   |   | 2Vx, 2Wx, 34x, 35x, 37x, 38x, 39x |   |   | 
|   | • | 4281-CTO |   |   | 
|   | • 4282-CTO, 25x, 26x, 27x, 29x, 2Ax, 2Bx, 2Dx, 2Ex, 2Fx, 2Gx, 2Hx, 2Jx, 2Kx, 2Mx, 2Nx, |   |   | 
|   |   | 2Px, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 2Xx, 32x, 35x, 36x, 37x, 38x, 3Bx, 3Cx, 3Dx, |   |   | 
|   |   | 3Ex, 3Fx, 3Gx, 3Hx, 3Px, 3Qx, 3Rx, 3Sx, 3Ux, 45x, 4Bx, 4Cx |   |   | 
|   | • 4284-CTO, 25x, 26x, 3Tx, 3Ux, 3Vx, 3Xx, 3Yx, 3Zx, 45x, 46x, 47x, 48x, 4Ax, 4Bx, 4Cx, 4Dx |   |   | 
|   |   |   |   | 
| 22 | Smart Card module | 04W1564 | N | 
|   | • 4239-CTO, 22x, 25x, 2Zx, 32x, 33x, 3Nx, 4Cx |   |   | 
|   | • 4240-CTO, 2Ux, 2Vx, 2Xx, 2Yx, 47x |   |   | 
|   | • | 4241-CTO |   |   | 
|   | • 4242-CTO, 2Ex, 2Fx, 2Lx, 2Vx, 3Ex, 3Fx, 3Gx, 3Jx, 3Kx, 3Lx, 3Qx, 44x, 4Ex, 4Fx, 4Gx, |   |   | 
|   |   | 4Hx, 4Qx, 58x, 59x |   |   | 
|   | • | 4243-CTO, 3Wx |   |   | 
|   | • | 4244-CTO |   |   | 
|   | • | 4246-CTO |   |   | 
|   | • | 4249-CTO |   |   | 
|   | • | 4260-CTO |   |   | 
|   | • | 4270-CTO |   |   | 
|   | • 4276-CTO, 23x, 24x, 25x, 2Rx, 2Sx, 2Tx, 36x |   |   | 
|   | • | 4281-CTO |   |   | 
|   | • 4282-CTO, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Ux, 2Vx, 2Yx, 2Zx, 32x, 33x, 3Kx, 3Lx, 3Px, 3Qx, |   |   | 
|   |   | 3Tx, 3Ux, 3Vx, 3Wx, 3Xx, 3Yx, 3Zx, 42x, 45x, 4Bx, 4Cx |   |   | 
|   | • 4284-CTO, 48x, 4Bx, 4Cx, 4Dx |   |   | 
|   |   |   |   | 
| 23 | Keyboard (see Keyboard.) |   |   | 
|   |   |   |   | 
| 24 | TrackPoint caps | 91P9642 | * | 
|   |   |   |   |   |