Let X be a linear lattice, let x ∈ X+, and let τ be a locally solid topology on X. We present four conditions equivalent to the τ -compactness of the order interval [0, x] in X, including the following ones: (i) there is a set S and an affine homeomorphism of [0, x] onto the Tychonoff cube [0, 1] S which preserves order; (ii) Cx, the set of components of x, is τ -compact and [0, x] is order σ-complete. In the special case where X is a Banach lattice and τ is its norm topology, another equivalent condition is: (iii) Cx is weakly compact and [0, x] is order σ-complete.